




GAUGETOPOLOGYSYMPLECTIC SEMINAR 
Song Sun (BERKELEY) 
Singular HermitianYangMills connections and reflexive sheaves 

December 06, 2019, 3:30 pm at Science Center 507 
CMSA SPECIAL SEMINAR 
Nick G. Jones (UNIVERSITY OF BRISTOL) 
Toeplitz determinants and correlations in topological quantum chains 

December 06, 2019, 1:00 pm  2:00 pm at CMSA, 20 Garden St, G02 
HARVARDMITMSR COMBINATORICS SEMINAR 
Nima ArkaniHamed (HARVARD UNIVERSITY) 
The (Dual) Amplituhedron 

December 06, 2019, 3:30 pm  4:30 pm at Science Center 309 
GROSSSIEBERT PROGRAM SEMINAR 
Daniel Pomerleano () 
A symplectic perspective on Intrinsic Mirror Symmetry 

December 05, 2019, 4:00 pm at Science Center 232 
CMSA CONDENSED MATTER/MATH SEMINAR 
Yizhi You (PRINCETON UNIVERSITY) 
Emergent fractons and algebraic quantum liquid from plaquette melting transitions 

December 05, 2019, 11:50 am  1:00 pm at CMSA, 20 Garden St, G10 
THURSDAY SEMINAR 
Peter Haine () 
Motivic Thom spectra and Ω^∞ MGL 

December 05, 2019, 3:00 pm  4:00 pm at Science Center 507 
HARVARDMITMSR COMBINATORICS SEMINAR 
Colin Defant (PRINCETON) 
Valid Hook Configurations and Uniquely Sorted 

December 04, 2019, 4:15 pm  5:15 pm at MIT Room 2139 
NUMBER THEORY SEMINAR 
Michele Fornea (IAS) 
On the arithmetic of elliptic curves over quintic fields 

December 04, 2019, 3:00 pm at Science Center 507 
CMSA COLLOQUIUM 
XiaoGang Wen (MIT) 
Emergence of gravitonlike excitations from a lattice model 

December 04, 2019, 4:30 pm 5:30 pm at CMSA, 20 Garden St, G10 
SNAPSHOTS OF MATH AT HARVARD 
Alex Cowan, Elana Kalashnikov, Dori Bejleri (HARVARD UNIVERSITY) 
Three stories from arithmetic statistics; Mirror symmetry for quiver flag varieties and their subvarieties; Compactifying moduli spaces 

December 04, 2019, 2:00 pm  3:00 pm at Science Center 507 
MATHEMATICAL PICTURE LANGUAGE SEMINAR 
Christopher King (NORTHEASTERN UNIVERSITY) 
Contractive bounds for quantum Markov semigroups 

December 03, 2019, 3:30 pm at Jefferson 356 
*CANCELED* DIFFERENTIAL GEOMETRY SEMINAR 
Niky Kamran (MCGILL UNIVERSITY) 
*CANCELED* Nonuniqueness results for the Calderon inverse problem with local or disjoint data 

December 03, 2019, 4:15 pm  5:15 pm at Science Center 507  **CANCELED** 
CMSA MATHEMATICAL PHYSICS SEMINAR 
W. A. ZunigaGalindo (CINVESTAV) 
Strings and Quantum Fields Over pAdic Spacetimes 

December 02, 2019, 12:00 pm  1:00 pm at CMSA, 20 Garden St, G02 
CMSA SPECIAL SEMINAR 
Yaoyu Zhang (IAS) 
A Fourier Analysis Perspective of Training Dynamics of Deep Neural Networks 

December 02, 2019, 3:00 pm  4:00 pm at CMSA, 20 Garden St, G02 
CMSA QUANTUM MATTER AND QUANTUM FIELD THEORY SEMINAR 
Meng Cheng (YALE UNIVERSITY) 
Gapped boundary of symmetric topological phases and relative anomalies in (1+1)d CFTs 

November 27, 2019, 10:30 am  12:00 pm at CMSA, 20 Garden St, G10 
DIFFERENTIAL GEOMETRY SEMINAR 
Or Hershkovits (STANFORD) 
Ancient solutions to the Mean Curvature Flow and applications 

November 26, 2019, 4:15 pm  5:15 pm at Science Center 507 
CMSA SPACETIME SEMINAR 
Stephan Stieberger (IAS) 
Strings on the Celestial Sphere 

November 26, 2019, 2:30 pm at CMSA, 20 Garden St, G10 
CMSA SPECIAL SEMINAR 
Philsang Yoo (YALE UNIVERSITY) 
From Quantum Field Theory to Geometric Representation Theory 

November 25, 2019, 3:00 pm  4:00 pm at CMSA, 20 Garden St, G10 
CMSA CONDENSED MATTER/MATH SEMINAR 
YuAn Chen (CALTECH) 
Exact bosonization in higher dimensions and the duality between supercohomology fermionic SPT and highergroup bosonic SPT phases 

November 25, 2019, 10:30 am  11:30 am at CMSA, 20 Garden St, G10 
CMSA MATHEMATICAL PHYSICS SEMINAR 
David Svoboda (PERIMETER INSTITUTE) 
From paraHermitian geometry to mirror symmetry 

November 25, 2019, 12:00 pm  1:00 pm at CMSA, 20 Garden St, G10 
CMSA COLLOQUIUM 
Madhu Sudan (HARVARD UNIVERSITY) 
Communication Complexity of Randomness Manipulation 

November 25, 2019, 4:30 pm 5:30 pm at CMSA, 20 Garden St, G10 
CMSA GENERAL RELATIVITY SEMINAR 
Shahar Hadar (HARVARD UNIVERSITY) 
Universal signatures of a black hole’s photon ring 

November 22, 2019, 10:30 am  11:30 am at Science Center 530 
CMSA SPACETIME SEMINAR 
Cristian Vergu (NIELS BOHR INSTITUTE) 
The Octagonal Alphabet 

November 21, 2019, 2:30 pm at CMSA, 20 Garden St, G10 
GROSSSIEBERT PROGRAM SEMINAR 
Tim Large () 
Introduction to Symplectic Cohomology 

November 21, 2019, 4:00 pm at Science Center 232 
CMSA CONDENSED MATTER/MATH SEMINAR 
Natalie Paquette (CALTECH) 
Koszul duality in field theory & holography 

November 21, 2019, 11:50 am " 1 :00 pm at CMSA, 20 Garden St, G10 
CMSA COLLOQUIUM 
Xi Yin (HARVARD UNIVERSITY) 
An Introduction to the NonPerturbative Bootstrap 

November 20, 2019, 4:30 pm 5:30 pm at CMSA, 20 Garden St, G10 
CMSA FLUID DYNAMICS SEMINAR 
Haoran Liu (UNIVERSITY OF TWENTE, THE NETHERLANDS) 
Applications of Phase Field method: drop impact and multiphase turbulence 

November 20, 2019, 3:00 pm at CMSA, 20 Garden St, G10 
JOINT CMSA AND DEPARTMENT OF MATHEMATICS RANDOM MATRIX AND PROBABILITY THEORY SEMINAR 
Vishesh Jain (MIT) 
A combinatorial approach to the quantitative invertibility of random matrices 

November 20, 2019, 3:15 pm  4:15 pm at CMSA, 20 Garden St, G02 
NUMBER THEORY SEMINAR 
Yihang Zhu (COLUMBIA UNIVERSITY) 
Stabilization of the trace formula for abeliantype Shimura varieties 

November 20, 2019, 3:00 pm at Science Center 507 
INFORMAL GEOMETRY AND DYNAMICS SEMINAR 
Dawei Chen (BOSTON COLLEGE) 
Volumes and intersection theory on moduli spaces of differentials 

November 20, 2019, 4:30 pm at Science Center 530 
CMSA FLUID DYNAMICS SEMINAR 
Steven Chong (UNIVERSITY OF TWENTE, THE NETHERLANDS) 
Confined RayleighBénard, rotating RayleighBénard, double diffusive convection and quasistatic magnetoconvection: A unifying view on their scalar transport enhancement 

November 20, 2019, 3:35 pm at CMSA, 20 Garden St, G02 
CMSA QUANTUM MATTER AND QUANTUM FIELD THEORY SEMINAR 
Subir Sachdev (HARVARD UNIVERSITY) 
Models of optimal doping criticality in the cuprate superconductors 

November 20, 2019, 10:45 am  12:15 pm at CMSA, 20 Garden St, G10 
HARVARDMITMSR COMBINATORICS SEMINAR 
Sunita Chepuri (MINNESOTA) 
Plabic Rmatrices 

November 20, 2019, 4:15 pm  5:15 pm at MIT 2139 
OPEN NEIGHBORHOOD SEMINAR 
Brooke Ullery (HARVARD UNIVERSITY) 
Polynomials vanishing on points in the plane 

November 20, 2019, 4:30 pm at Science Center 507 
LOGIC COLLOQUIUM 
George E. Smith (TUFTS UNIVERSITY) 
TheoryMediated Measurement of Interlinked Constants Evidence of a Different Kind? 

November 20, 2019, 4:30 pm 5:30 pm at Logic Center, Room 420, 2 Arrow Street 
DIFFERENTIAL GEOMETRY SEMINAR 
John Loftin (RUTGERS UNIVERSITY) 
Limits of Hitchin Representations for Rank2 Lie Groups 

November 19, 2019, 4:15 pm at Science Center 507 
HARVARDMITMSR COMBINATORICS SEMINAR 
Jacob Bourjaily (PENN STATE UNIVERSITY) 
Stratifying OnShell (Cluster) Varieties 

November 15, 2019, 3:30 pm  4:30 pm at Science Center 530 
GAUGETOPOLOGYSYMPLECTIC SEMINAR 
Dan CristofaroGardiner (SANTA CRUZ) 
Refined asymptotics for the ECH spectrum 

November 15, 2019, 3:30 pm at Science Center 507 
BRANDEISHARVARDMITNORTHEASTERN JOINT COLLOQUIUM 
Ellen Eischen (U OREGON) 
Some congruences and consequences in number theory and beyond 

November 14, 2019, 4:30 pm 5:30 pm at Science Center Hall E 
CMSA SPACETIME SEMINAR 
Pierpaolo Mastrolia (UNIVERSITY OF PADOVA) 
Feynman Integrals and Intersection Theory, Pt. 2 

November 14, 2019, 2:30 pm at CMSA, 20 Garden St, G02 
CMSA CONDENSED MATTER/MATH SEMINAR 
Michael Pretko (U COLORADO) 
Advances in Fracton Physics: Dualities, Field Theories, and Classification 

November 14, 2019, 11:50 am  1:00 pm at CMSA, 20 Garden St, G02 
THURSDAY SEMINAR 
Elden Elmanto and Tom Bachmann (HARVARD UNIVERSITY/MIT) 
Cancellation leftovers and homotopy invariance of presheaves with framed transfers 

November 14, 2019, 3:00  4:20 pm at Science Center 507 
OPEN NEIGHBORHOOD SEMINAR 
Ellen Eischen (U OREGON) 
An Introduction to the Bernoulli Numbers, from Pythagoras to Present 

November 13, 2019, 4:30 pm at Science Center 507 
NUMBER THEORY SEMINAR 
Daxin Xu (CALTECH) 
Bessel Fisocrystals for reductive groups 

November 13, 2019, 3:00 pm at Science Center 507 
CMSA QUANTUM MATTER AND QUANTUM FIELD THEORY SEMINAR 
Michael Pretko (U COLORADO) 
Introduction to Fractons 

November 13, 2019, 10:30 am  12:00 pm at CMSA, 20 Garden St, G02 
JOINT CMSA AND DEPARTMENT OF MATHEMATICS RANDOM MATRIX AND PROBABILITY THEORY SEMINAR 
Gourab Ray (UNIVERSITY OF VICTORIA) 
Logarithmic variance of height function of squareice 

November 13, 2019, 3:15  4:15 pm at CMSA, 20 Garden St, G02 
CMSA FLUID DYNAMICS SEMINAR 
Martin Lellep (PHILIPPS UNIVERSITY OF MARBURG, GERMANY) 
Predictions of relaminarisation in turbulent shear flows using deep learning 

November 13, 2019, 2:10  3:00 pm *note special time* at CMSA, 20 Garden St, G02 *note different room* 
CMSA COLLOQUIUM 
Heather Harrington (UNIVERSITY OF OXFORD) 
Algebra, Geometry and Topology of ERK Enzyme Kinetics 

November 13, 2019, 4:30  5:30 pm at CMSA, 20 Garden St, G10 
HARVARD LOGIC COLLOQUIUM 
Matthew Foreman (UNIVERSITY OF CALIFORNIA AT IRVINE) 
When is time forward isomorphic to time backward? 

November 13, 2019, 4:30  5:30 pm at Logic Center, 2 Arrow St, Rm 420 
CMSA GENERAL RELATIVITY SEMINAR 
Eric Woolgar (UNIVERSITY OF ALBERTA) 
Conditions of curvaturedimension type in Lorentzian geometry and in black hole topology 

November 13, 2019, 1:00  2:00 pm at CMSA, 20 Garden St, G02 
INFORMAL GEOMETRY & DYNAMICS SEMINAR 
David Dumas (UNIVERSITY OF ILLINOIS AT CHICAGO) 
Experimental study of a meromorphic analogue of Teichmüller space 

November 13, 2019, 4:30 pm at Science Center 530 
MATHEMATICAL PICTURE LANGUAGE SEMINAR 
Yichen Huang (MIT) 
Renyi entanglement entropy in quantum manybody systems 

November 12, 2019, 3:30 pm at Jefferson 356 
CMSA SPACETIME SEMINAR 
Pierpaolo Mastrolia (UNIVERSITY OF MUNICH) 
Feynman Integrals and Intersection Theory 

November 12, 2019, 3:30 pm at CMSA, 20 Garden St, G02 
DIFFERENTIAL GEOMETRY SEMINAR 
YuShen Lin (BOSTON UNIVERSITY) 
On the SYZ Mirror Symmetry of Log CalabiYau Surfaces 

November 12, 2019, 4:15 pm  5:15 pm at Science Center 507 
CMSA GENERAL RELATIVITY SEMINAR 
PeiKen Hung (MIT) 
Stability of the modified wave map gauge 

November 08, 2019, 10:30 am  11:30 am at Science Center 530 
GAUGETOPOLOGYSYMPLECTIC SEMINAR 
Lisa Piccirillo (BRANDEIS/MIT) 
Knot traces and PL embeddings 

November 08, 2019, 3:30 pm at Science Center 507 
SYMPLECTIC GEOMETRY SEMINAR 
Yingdi Qin (BERKELEY AND HARVARD) 
Coisotropic branes in symplectic tori 

November 08, 2019, 2:00 pm  3:00 pm at Science Center 530 
CMSA CONDENSED MATTER/MATH SEMINAR 
Mathias Scheurer (HARVARD UNIVERSITY) 
Gauge theories for the cuprates: thermal Hall effect and optimal doping 

November 07, 2019, 11:50 am at CMSA, 20 Garden St, G10 
THURSDAY SEMINAR 
Elden Elmanto and Tom Bachmann () 
The Framed Cancellation Theorem + Moving Leftovers 

November 07, 2019, 3:00 pm  5:00 pm at Science Center 507 
NUMBER THEORY SEMINAR 
Kestutis Cesnavicius (CNRS/PARISSUD) 
Purity for flat cohomology 

November 06, 2019, 3:00 pm  4:00 pm at Sci Center 507 
CMSA FLUID DYNAMICS SEMINAR 
Federico Toschi (EINDHOVEN UNIVERSITY OF TECHNOLOGY) 
Deep learning and reinforcement learning for turbulence 

November 06, 2019, 3:00 pm  4:00 pm at CMSA, 20 Garden St, G10 
CMSA QUANTUM MATTER AND QUANTUM FIELD THEORY SEMINAR 
Dan Freed (U TEXAS) 
Mtheory is timereversal invariant 

November 06, 2019, 10:30 am  12 pm at CMSA, 20 Garden St, G10 
CMSA COLLOQUIUM 
Kevin Costello (PERIMETER INSTITUTE) 
A unified perspective on integrability 

November 06, 2019, 4:30 pm 5:30 pm at CMSA, 20 Garden St, G10 
JOINT CMSA AND DEPARTMENT OF MATHEMATICS RANDOM MATRIX AND PROBABILITY THEORY SEMINAR 
Bruno Nachtergaele (UC DAVIS) 
The transmission time and local integrals of motion for disordered spin chains 

November 06, 2019, 3:15 pm  4:15 pm at CMSA, 20 Garden St, G02 
HARVARD/MIT ALGEBRAIC GEOMETRY SEMINAR 
Hélène Esnault (FREIE UNIVERSITäT BERLIN/INSTITUTE FOR ADVANCED STUDY) 
Special loci of rank one local systems 

November 05, 2019, 3:00 pm  4:00 pm at Science Center 507 
DIFFERENTIAL GEOMETRY SEMINAR 
Kyeongsu Choi (MIT) 
The Gauss curvature flow  the shape of worn stones 

November 05, 2019, 4:15 pm  5:15 pm at Science Center 507 
CMSA MATHEMATICAL PHYSICS SEMINAR 
Elana Kalashnikov (HARVARD UNIVERSITY) 
Mirror symmetry and automorphisms 

November 04, 2019, 12:00 pm  1:00 pm at CMSA, 20 Garden St, G10 
CMSA SPECIAL SEMINAR 
Sawomir Kodziej (JAGIELLONIAN UNIVERSITY) 
Weak subsolutions and solutions of the MongeAmpere equation 

November 04, 2019, 2:30 pm at CMSA, 20 Garden St, G10 
CMSA GENERAL RELATIVITY SEMINAR 
Peter Hintz (MIT) 
Linear stability of slowly rotating Kerr black holes 

November 01, 2019, 10:30 am  11:30 am at Science Center 530 
HARVARDMITMSR COMBINATORICS SEMINAR 
Xuhua He () 
The m=2 amplituhedron 

November 01, 2019, 3:30 pm  4:30 pm at Science Center 232 
CMSA SPACETIME SEMINAR 
George Lusztig (MIT) 
Total positivity in Springer fibres 

November 01, 2019, 1:30 pm2:30 pm at Science Center 232 
GAUGETOPOLOGYSYMPLECTIC SEMINAR 
Ko Honda (UCLA) 
Convex hypersurface theory in higherdimensional contact topology 

November 01, 2019, 3:30 pm at Science Center 507 
CMSA CONDENSED MATTER/MATH SEMINAR 
Patrick Lee (MIT) 
Gapless spin liquid and emergent gauge theory 

October 31, 2019, 11:50 am at CMSA, 20 Garden St, G10 
GROSSSIEBERT PROGRAM SEMINAR 
Charles Wang (HARVARD UNIVERSITY) 
Introduction to Theta Functions 

October 31, 2019, 4:00 pm at Science Center 232 
THURSDAY SEMINAR 
Elden Elmanto and Tom Bachmann () 
Reconstruction 

October 31, 2019, 3:00 pm  5:00 pm at Science Center 507 
CMSA SPACETIME SEMINAR 
Junjie Rao (ALBERT EINSTEIN INSTITUTE) 
Allloop Mondrian Reduction of 4particle Amplituhedron at Positive Infinity 

October 31, 2019, 2:30 pm at CMSA, 20 Garden St, G10 
CMSA QUANTUM MATTER AND QUANTUM FIELD THEORY SEMINAR 
Chong Wang (PERIMETER INSTITUTE) 
A theory of deconfined pseudocriticality 

October 30, 2019, 10:30 am  12:00 pm at CMSA, 20 Garden St, G02 
NUMBER THEORY SEMINAR 
Yifeng Liu (YALE UNIVERSITY) 
Isolation of L^2 spectrum and GanGrossPrasad conjecture 

October 30, 2019, 3:00 pm at Science Center 530 
JOINT CMSA AND DEPARTMENT OF MATHEMATICS RANDOM MATRIX AND PROBABILITY THEORY SEMINAR 
Aram Harrow (MIT) 
Random quantum circuits, phase transitions and complexity 

October 30, 2019, 3:15 pm  4:15 pm at CMSA, 20 Garden St, G02 
CMSA COLLOQUIUM 
Nima ArkaniHamed (IAS) 
Spacetime, Quantum Mechanics and Positive Geometry at Infinity 

October 30, 2019, 4:30 pm 5:30 pm at CMSA, 20 Garden St, G10 
CMSA MATHEMATICAL PHYSICS SEMINAR 
Max Jordan Zimet (BLACKHOLE INITIATIVE) 
K3 metrics from little string theory 

October 28, 2019, 12:00 pm  1:00 pm at CMSA, 20 Garden St, G02 
CMSA GENERAL RELATIVITY SEMINAR 
Christina Sormani (CUNY) 
Scalar Curvature and Intrinsic Flat Convergence 

October 25, 2019, 10:30 am  11:30 am at Science Center 530 
GAUGETOPOLOGYSYMPLECTIC SEMINAR 
Alex Waldron (MICHIGAN STATE UNIVERSITY) 
G_2instantons on the 7sphere 

October 25, 2019, 3:30 pm at Sci Center 507 
CMSA CONDENSED MATTER/MATH SEMINAR 
Andrew Turner (MIT) 
General Ftheory models with SU(3) x SU(2) x U(1) / Z_6 symmetry 

October 24, 2019, 11:50 am at CMSA, 20 Garden St, G10 
THURSDAY SEMINAR 
Jeremy Hahn (MIT) 
Framings and the recognition principle 

October 24, 2019, 3:00 pm  5:00 pm at Science Center 507 
GROSSSIEBERT PROGRAM SEMINAR 
Maxim Jeffs (HARVARD UNIVERSITY) 
A Gentle Introduction to Scattering 

October 24, 2019, 3:00 pm at Science Center 232 
INFORMAL GEOMETRY & DYNAMICS SEMINAR 
Martin Bridgeman (BOSTON COLLEGE) 
The WeilPetersson gradient flow for renormalized volume 

October 23, 2019, 4:30 pm at Science Center 530 
OPEN NEIGHBORHOOD SEMINAR 
Marius Lemm (HARVARD UNIVERSITY) 
Why doesn't an electron fall into the nucleus? 

October 23, 2019, 4:30 pm at Science Center 507 
CMSA QUANTUM MATTER/QUANTUM FIELD THEORY SEMINAR 
Chong Wang (PERIMETER) 
Unquantized quantum anomalies: electric polarization, Luttinger theorem and correlated Weyl semimetals 

October 23, 2019, 10:30 am  12:00 pm at CMSA, 20 Garden St, G10 
JOINT CMSA AND DEPARTMENT OF MATHEMATICS RANDOM MATRIX AND PROBABILITY THEORY SEMINAR 
Souvik Dhara (MIT) 
A new universality class for critical percolation on networks with heavytailed degrees 

October 23, 2019, 3:15 pm  4:15 pm at CMSA, 20 Garden St, G02 
NUMBER THEORY SEMINAR 
Evan O'Dorney (PRINCETON UNIVERSITY) 
Reflection theorems generalizing the OhnoNakagawa identities 

October 23, 2019, 3:00 pm at Science Center 507 
CMSA FLUID DYNAMICS SEMINAR 
Kimee Moore (HARVARD UNIVERSITY) 
Using magnetic fields to investigate Jupiter's fluid interior 

October 23, 2019, 3:00 pm  4:00 pm at CMSA, 20 Garden St, G10 
HARVARD/MIT ALGEBRAIC GEOMETRY SEMINAR 
Francois Greer (STONY BROOK UNIVERSITY) 
Lagrangian spheres which are not vanishing cycles 

October 22, 2019, 3:00 pm  4:00 pm at Science Center 507 
MATHEMATICAL PICTURE LANGUAGE SEMINAR 
Juven Wang (CMSA, HARVARD UNIVERSITY) 
Quantum 4d YangMills Theories and TimeReversal Symmetric 5d HigherGauge TQFT 

October 22, 2019, 3:30 pm at Jefferson 356 
CMSA MATHEMATICAL PHYSICS SEMINAR 
ManWai Cheung (HARVARD UNIVERSITY) 
Compactification for cluster varieties without frozen variables of finite type 

October 21, 2019, 12:20  1:10 pm *note special time at CMSA, 20 Garden St, G10 
GAUGETOPOLOGYSYMPLECTIC SEMINAR 
Laurent Côté (STANFORD) 
Rigidity of cotangent fibers of Riemann surfaces 

October 18, 2019, 3:30 pm at Science Center 507 
CMSA GENERAL RELATIVITY SEMINAR 
Jordan Keller (BHI) 
Angular Momentum and CenterofMass at Null Infinity 

October 18, 2019, 10:30 am  11:30 am at Science Center 530 
CMSA SPACETIME SEMINAR 
Sebastian Franco (THE CITY COLLEGE OF NEW YORK) 
Graded quivers, generalized dimer models, and toric geometry 

October 18, 2019, 2:30 pm at CMSA, 20 Garden St, G02 
THURSDAY SEMINAR 
Elden Elmanto (HARVARD UNIVERSITY) 
A framed correspondences primer via MilnorWitt Ktheory 

October 17, 2019, 3:00 pm  5:00 pm at Science Center 507 
NUMBER THEORY SEMINAR 
Bejamin Matschke (BOSTON UNIVERSITY) 
Proofs by Example 

October 16, 2019, 3:00 pm at Science Center 507 
LOGIC COLLOQUIUM 
Gabriel Goldberg (UC BERKELEY) 
Generalizations of the Ultrapower Axiom 

October 16, 2019, 4:30 pm  5:30 pm (talk), 5:30 pm 6:30 pm (reception) at CLogic Center, 2 Arrow St, Rm 420 
CMSA QUANTUM MATTER/QUANTUM FIELD THEORY SEMINAR 
Kantaro Ohmori (SUNY SCGP) 
Anomaly Obstructions to Symmetry Preserving Gapped Phases: Discrete symmetry case 

October 16, 2019, 10:30 am at CMSA, 20 Garden St, G02 
JOINT CMSA AND DEPARTMENT OF MATHEMATICS RANDOM MATRIX AND PROBABILITY THEORY SEMINAR 
WeiKuo Chen (UNIVERSITY OF MINNESOTA) 
The generalized TAP free energy 

October 16, 2019, 3:15 pm at CMSA, 20 Garden St, G02 
CMSA COLLOQUIUM 
Aram Harrow (MIT) 
Monogamy of entanglement and convex geometry 

October 16, 2019, 4:00 pm  5:00 pm at CMSA, 20 Garden St, G10 
HARVARD/MIT ALGEBRAIC GEOMETRY SEMINAR 
Jonathan Wise (UNIVERSITY OF COLORADO) 
The universal compactified Picard group and Grothendieck's theorem in tropical geometry 

October 15, 2019, 3:00 pm at Science Center 507 
CMSA SPACETIME SEMINAR 
Sergey Fomin (UNIVERSITY OF MICHIGAN) 
Morsifications and mutations (joint work with P. Pylyavskyy, E. Shustin, and D. Thurston) 

October 15, 2019, 3:30 pm at CMSA, 20 Garden St, G10 
DIFFERENTIAL GEOMETRY SEMINAR 
Shubham Dwivedi (U WATERLOO) 
A gradient flow of isometric $G_2$ structures 

October 15, 2019, 4:15 pm  5:15 pm at Science Center 507 
GAUGETOPOLOGYSYMPLECTIC SEMINAR 
Agustín Moreno (AUGSBURG) 
Bourgeois contact structures: tightness, fillability and applications 

October 11, 2019, 3:30 pm at Science Center 507 
CMSA GENERAL RELATIVITY SEMINAR 
Graham Cox (MEMORIAL UNIVERSITY) 
Blowup solutions of Jang’s equation near a spacetime singularity 

October 11, 2019, 10:30 am  11:30 am at Science Center 530 
CMSA SPACETIME SEMINAR 
Yutin Huang (NATIONAL TAIWAN UNIVERSITY) 
Dualities of Planar Ising Networks and the Positive Orthogonal Grassmannian 

October 10, 2019, 3:30 pm  4:30 pm at CMSA, 20 Garden St, G10 
GROSSSIEBERT PROGRAM SEMINAR 
Mandy Cheung (HARVARD UNIVERSITY) 
GrossSiebert Construction Examples 

October 10, 2019, 4:05 pm at Science Center 232 
THURSDAY SEMINAR 
Dexter Chua (HARVARD UNIVERSITY) 
Introduction to Motivic Homotopy Theory 

October 10, 2019, 3:00 pm  5:00 pm at Science Center 507 
CMSA CONDENSED MATTER/MATH SEMINAR 
Julio Parra Martinez (UCLA) 
GSO projections and Dbrane classification via SPT phases 

October 10, 2019, 11:50 am  1:00 pm at CMSA, 20 Garden St, G10 
CMSA QUANTUM MATTER/QUANTUM FIELD THEORY SEMINAR 
Peter Koroteev (UC BERKELEY) 
On Quiver Walgebras and Defects from Gauge Origami 

October 09, 2019, 10:30 am  12:00 pm at CMSA, 20 Garden St, G10 
NUMBER THEORY SEMINAR 
Stefan Patrikis (UTAH) 
Geometric lifts of odd Galois representations 

October 9, 2019, 3:00 pm  4:00 pm at Science Center 507 
CMSA FLUID DYNAMICS SEMINAR 
Samuel Rudy (MIT) 
Datadriven methods for discovery of partial differential equations and forecasting 

October 09, 2019, 3:00 pm at CMSA, 20 Garden St, G10 
CMSA COLLOQUIUM 
Hans Lindblad (JOHNS HOPKINS UNIVERSITY) 
Global Existence and Scattering for Einstein's equations and related equations satisfying the weak null condition 

October 09, 2019, 4:30  5:30 pm at CMSA, 20 Garden St, G10 
HARVARD LOGIC COLLOQUIUM 
Justin Moore (CORNELL UNIVERSITY) 
What makes the continuum ℵ2 

October 09, 2019, 4:30  5:30 pm at Logic Center, 2 Arrow St, Rm 420 
JOINT CMSA AND DEPARTMENT OF MATHEMATICS RANDOM MATRIX AND PROBABILITY THEORY SEMINAR 
Ruth J. Williams (UNIVERSITY OF CALIFORNIA, SAN DIEGO & CMSA VISITOR) 
Stability of a Fluid Model for Fair Bandwidth Sharing with General File Size Distributions 

October 09, 2019, 3:15  4:15 pm at CMSA, 20 Garden St, G02 
INFORMAL GEOMETRY AND DYNAMICS SEMINAR 
Saul Schleimer (UNIVERSITY OF WARWICK) 
From veering triangulations to pseudoAnosov flows (and back again) 

October 09, 2019, 4:30 pm at Science Center 530 
OPEN NEIGHBORHOOD SEMINAR 
Kate Stange (COLORADO) 
Quantum computers and the future of cryptography 

October 09, 2019, 4:30 pm at Science Center 507 
DIFFERENTIAL GEOMETRY SEMINAR 
Daren Cheng (U CHICAGO) 
Bubble tree convergence of conformally cross product preserving maps 

October 8, 2019, 4:15 pm  5:15 pm at Sci Center 507 
HARVARD/MIT ALGEBRAIC GEOMETRY SEMINAR 
Ananth Shankar (MIT) 
Picard ranks of families of K3 surfaces in positive characteristic 

October 8, 2019, 3:00 pm  4:00 pm at Science Center 507 
CMSA MATH PHYSICS SEMINAR 
Xiao Zheng (BOSTON UNIVERSITY) 
Equivariant disc potentials and the SYZ mirror construction 

October 07, 2019, 12:00 pm  1:00 pm at CMSA, 20 Garden St, G10 
CMSA SPECIAL SEMINAR 
Liang Kong (SHENZHEN INSTITUTE OF QUANTUM SCIENCES AND ENGINEERING, SOUTHERN UNIVERSITY OF SCIENCE AND TECHNOLOGY) 
A unified mathematical theory of both gapped and gapless boundaries of 2+1D topological orders 

October 4, 2019, 3:00 pm at CMSA, 20 Garden St, G10 
CMSA SPACETIME SEMINAR 
Simon CaronHuot (MCGILL UNIVERSITY) 
Poincare Duals of Feynman Integrals 

October 03, 2019, 2:30 pm at CMSA, 20 Garden St, G10 
CMSA CONDENSED MATTER/MATH SEMINAR 
Ryan Thorngren (CMSA) 
Domain Walls and the CPT Theorem 

October 03, 2019, 12:00 pm  1:00 pm at CMSA, 20 Garden St, G10 
THURSDAY SEMINAR 
Lucy Yang (HARVARD UNIVERSITY) 
Classical infinite loop space theory + epsilon 

October 3, 2019, 3:00 pm  5:00 pm at Science Center 507 
GROSSSIEBERT PROGRAM SEMINAR 
Maxim Jeffs (HARVARD UNIVERSITY) 
HocusPocus with the FocusFocus Locus 

October 03, 2019, 3:30 pm at Science Center 232 
JOINT CMSA AND DEPARTMENT OF MATHEMATICS RANDOM MATRIX AND PROBABILITY THEORY SEMINAR 
Jian Ding (UNIVERSITY OF PENNSYLVANIA) 
Distances associated with Liouville quantum gravity 

October 3, 2019, 4:30 pm 5:30 pm at CMSA Building, 20 Garden St, G02 
NUMBER THEORY SEMINAR 
Ananth Shankar (MIT) 
Isogenies between abelian varieties in positive and mixed characteristic 

October 2, 2019, 3:00 pm at Science Center 507 
CMSA COLLOQUIUM 
Spiro Karigiannis (UNIVERSITY OF WATERLOO) 
Cohomologies on almost complex manifolds and their applications 

October 2, 2019, 4:30 pm 5:30 pm at CMSA, 20 Garden St, G10 
CMSA QUANTUM MATTER/QUANTUM FIELD THEORY SEMINAR 
Zhen Bi (MIT) 
Novel quantum criticality beyond LandauGinzburgWilsonFisher paradigm 

October 02, 2019, 10:30 am  12:00 pm at CMSA, 20 Garden St, G10 
DIFFERENTIAL GEOMETRY SEMINAR 
Julian Scheuer (FREIBURG) 
The Minkowski inequality in de Sitter space 

October 01, 2019, 4:15 pm  5:15 pm at Sci Center 507 
CMSA MATH PHYSICS SEMINAR 
Dmitry Tonkonog (HARVARD UNIVERSITY) 
Floer theory and rigid subsets of symplectic manifolds 

September 30, 2019, 12:00 pm  1:00 pm at CMSA, 20 Garden St, G10 
GAUGETOPOLOGYSYMPLECTIC SEMINAR 
Jon Bloom (BROAD INSTITUTE) 
Principal component analysis for topologists 

September 27, 2019, 3:30 pm at Science Center 507 
HARVARDMITMSR COMBINATORICS SEMINAR 
Chris Eur (UC BERKELEY) 
Simplicial generation of Chow rings of matroids 

September 27, 2019, 3:30 pm at Sci Center 507 
CMSA SPACETIME SEMINAR 
Tomasz Taylor (NORTHEASTERN) 
Celestial Amplitudes 

September 26, 2019, 2:30 pm at CMSA, 20 Garden St, G10 
CMSA CONDENSED MATTER/MATH SEMINAR 
ShuHeng Shao (IAS) 
Anomalies and Charged Operators 

September 26, 2019, 12:00 pm  1:00 pm at CMSA, 20 Garden St, G10 
GROSSSIEBERT PROGRAM SEMINAR 
Dmitry Tonkonog (HARVARD UNIVERSITY) 
The GrossSiebert Construction, Part 1 

September 26, 2019, 3:30 pm at Science Center 232 
NUMBER THEORY SEMINAR 
Tony Feng (MIT) 
Steenrod operations and the ArtinTate pairing 

September 25, 2019, 3:00 pm at Science Center 507 
CMSA COLLOQUIUM 
Pavel Etingof (MIT) 
Double affine Hecke algebras 

September 25, 2019, 4:30 pm 5:30 pm at CMSA, 20 Garden St, G10 
CMSA FLUID DYNAMICS SEMINAR 
Yantao Yang (PEKING UNIVERSITY) 
Double diffusive convection and thermohaline staircases 

September 25, 2019, 3:00 pm  4:00 pm at CMSA, 20 Garden St, G10 
CMSA MATH PHYSICS SEMINAR 
Fenglong You (UNIVERSITY OF ALBERTA) 
Gluing Periods for DHT Mirrors 

September 25, 2019, 12:00 pm  1:00 pm at CMSA, 20 Garden St, G10 
CMSA QUANTUM MATTER AND QUANTUM FIELD THEORY SEMINAR 
Juven Wang (CMSA) 
HigherRank Tensor Field Theory of NonAbelian Fracton and Embeddon 

September 25, 2019, 10:30 am  12:00 pm at CMSA, 20 Garden St, G10 
JOINT CMSA AND DEPARTMENT OF MATHEMATICS RANDOM MATRIX AND PROBABILITY THEORY SEMINAR 
Jeff Schenker (MICHIGAN STATE UNIVERSITY) 
An ergodic theorem for homogeneously distributed quantum channels with applications to matrix product states 

September 25, 2019, 3:15 pm at CMSA, 20 Garden St, G02 
HARVARD/MIT ALGEBRAIC GEOMETRY SEMINAR 
Remy van Dobben de Bruyn (PRINCETON UNIVERSITY) 
A variety that cannot be dominated by one that lifts 

September 24, 2019, 3:00 pm at Sci Center 507 
DIFFERENTIAL GEOMETRY SEMINAR 
Carl Lian (COLUMBIA) 
Enumerating pencils with moving ramification on curves 

September 24, 2019, 4:15 pm  5:15 pm at Science Center 507 
CMSA GENERAL RELATIVITY SEMINAR 
Martin Lesourd (BHI) 
Existence of minimal or marginally outer trapped surfaces from quasilocal mass 

September 20, 2019, 10:30 am  11:30 am at Sci Center 530 
GAUGETOPOLOGYSYMPLECTIC SEMINAR 
Yi Ni (CALTECH) 
Thurston norm minimizing Seifert surfaces 

September 20, 2019, 3:30 pm at Science Center 507 
HARVARDMITMSR COMBINATORICS SEMINAR 
Julianna Tymoczko (SMITH COLLEGE) 
Hessenberg varieties, combinatorial constructions of equivariant cohomology, and the StanleyStembridge conjecture 

September 20, 2019, 3:30 pm  4:30 pm at Sci Center 530 
CMSA SPACETIME SEMINAR 
Chuck Doran (UNIVERSITY OF ALBERTA) 
CalabiYau geometry of the Nloop sunset Feynman integrals 

September 19, 2019, 2:30 pm at CMSA, 20 Garden St, G10 
GROSSSIEBERT PROGRAM SEMINAR 
Charles Wang (HARVARD UNIVERSITY) 
Introduction to Toric Degenerations 

September 19, 2019, 3:30 pm at Science Center 232 
BRANDEISHARVARDMITNORTHEASTERN JOINT COLLOQUIUM 
Will Sawin (COLUMBIA UNIVERSITY) 
The Twin Primes and Chowla conjectures in F_q[T] 

September 19, 2019, Tea at 4:00 pm, Talk at 4:30 pm at Science Center Hall E 
THURSDAY SEMINAR 
Peter Haine (MIT) 
Local complete intersections, the cotangent complex, and the Hilbert scheme of framed points 

September 19, 2019, 3:00  5:00 PM at Science Center 507 
CMSA QUANTUM MATTER AND QUANTUM FIELD THEORY SEMINAR 
PoShen Hsin (CALTECH) 
Lorentz symmetry fractionalization and duality in (2+1)d 

September 18, 2019, 10:30 am  12 pm at CMSA, 20 Garden St, G10 
NUMBER THEORY SEMINAR 
Wei Zhang (MIT) 
The arithmetic fundamental lemma for diagonal cycles 

September 18, 2019, 3:00 pm at Sci Center 507 
CMSA COLLOQUIUM 
Bill Helton (UC SAN DIEGO) 
A taste of noncommutative convex algebraic geometry 

September 18, 2019, 4:30 pm 5:30 pm at CMSA, 20 Garden St, G10 
CMSA FLUID DYNAMICS SEMINAR 
Jiawei Zhuang (HARVARD UNIVERSITY) 
The computational cost of fluid simulations grows rapidly with grid resolution. With the recent slowdown of Moore's Law, it can take many decades for 10x higher resolution grids to become affordable. To break this major barrier in highperformance scientific computing, we used a datadriven approach to learn an optimal numerical solver that can retain highaccuracy at much coarser grids. We applied this method to 2D turbulent advection and achieved 4x effective resolution than traditional highorder fluxlimited advection solvers. The machine learning component is tightly integrated with traditional finitevolume schemes and can be trained via an endtoend differentiable programming framework. The model can achieve nearpeak FLOPs on CPUs and accelerators via convolutional filters. 

September 18, 2019, 3:00 pm at CMSA, 20 Garden St, G10 
LOGIC SEMINAR 
Sebastien Vasey (HARVARD UNIVERSITY) 
The Weak Diamond 

September 18, 2019, 4:00 pm  5:00 pm at Logic Center, Room 420, 2 Arrow Street 
HARVARD/MIT ALGEBRAIC GEOMETRY SEMINAR 
Geoffrey Smith (HARVARD UNIVERSITY) 
Stability conditions and the irrationality of surfaces 

September 17, 2019, 3:00 pm at Science Center 507 
DIFFERENTIAL GEOMETRY SEMINAR 
Xin Zhou (UCSB) 
Existence of hypersurfaces with prescribed mean curvature 

September 17, 2019, 4:15 pm  5:15 pm at Science Center 507 
CMSA MATHEMATICAL PHYSICS SEMINAR 
Eirik Eik Svanes (KING'S COLLEGE LONDON AND ICTP) 
On coupled moduli problems and effective topological theories 

September 16, 2019, 12 pm  1 pm at CMSA, 20 Garden St, G10 
CMSA GENERAL RELATIVITY SEMINAR 
Martin Lesourd (BHI) 
ShiTam's Existence of Minimal Surfaces from QuasiLocal Mass 

September 13, 2019, 10:30 am  11:30 am at CMSA, 20 Garden St, G02 
GAUGETOPOLOGYSYMPLECTIC SEMINAR 
Dmitry Tonkonog (HARVARD UNIVERSITY) 
Floertheoretic heaviness and Lagrangian skeleta 

September 13, 2019, 3:30  4:30 pm at Science Center 507 
THURSDAY SEMINAR 
Michael Hopkins (HARVARD UNIVERSITY) 
Infinite loop spaces in motivic homotopy theory: Overview 

September 12, 2019, 3:00  5:00 pm at Science Center 507 
GROSSSIEBERT PROGRAM SEMINAR 
Denis Auroux (HARVARD UNIVERSITY) 
Introduction to SYZ Mirror Symmetry 

September 12, 2019, 3:30 pm at Science Center 232 
CMSA SPACETIME SEMINAR 
Pasha Pylyavskyy (UNIVERSITY OF MINNESOTA) 
Vectorrelation configurations and plabic graphs 

September 12, 2019, 2:30 pm at CMSA, 20 Garden St, G10 
JOINT CMSA AND DEPARTMENT OF MATHEMATICS RANDOM MATRIX AND PROBABILITY THEORY SEMINAR 
Subhabrata Sen (HARVARD UNIVERSITY) 
Sampling convergence for random graphs: graphexes and multigraphexes 

September 11, 2019, 1:45 pm  2:45 pm at CMSA, 20 Garden St, G02 
NUMBER THEORY SEMINAR 
Fabian Gundlach (HARVARD UNIVERSITY) 
Multiplication tables of Galois extensions 

September 11, 2019, 3:00 pm  4:00 pm at Science Center 507 
BLACK HOLE INITIATIVE LECTURE 
Hanoch Gutfreund (HEBREW UNIVERSITY) 
Relatively Speaking: Einstein and Black Holes 

September 11, 2019, 5:30 pm at Northwest Science Building, Room B103 
OPEN NEIGHBORHOOD SEMINAR 
Joe Harris (HARVARD UNIVERSITY) 
How many lines meet each of 4 given lines in 3space, and why it matters 

September 11, 2019, 4:30 pm at Science Center 507 
HARVARD/MIT ALGEBRAIC GEOMETRY SEMINAR 
Ziquan Zhuang (MIT) 
Birational superrigidity is not a locally closed property 

September 10, 2019, 3:00 pm at 2147 MIT 
DIFFERENTIAL GEOMETRY SEMINAR 
Ahil Alaee (CMSA) 
Geometric inequalities for quasilocal masses 

September 10, 2019, 4:15  5:15 pm at Science Center 507 
CMSA MATHEMATICAL PHYSICS SEMINAR 
Daniel Pomerleano (UNIVERSITY OF MASSACHUSETTS BOSTON) 
Intrinsic mirror symmetry via symplectic topology 

September 09, 2019, 12:00 pm  1:00 pm at CMSA, 20 Garden St, G10 
GROSSSIEBERT PROGRAM SEMINAR 
() 
Organizational meeting 

September 05, 2019, 3:30 pm at Science Center 232 
CMSA SPECIAL SEMINAR 
Masaki Oshikawa (U TOKYO) 
Gauge invariance, polarization, and conductivity 

May 28, 2019, 10:30 am at CMSA, 20 Garden St, G10 
CMSA FLUID DYNAMICS SEMINAR 
Jörn Dunkel (MIT) 
Symmetry breaking in active and quantum fluids 

May 22, 2019, 3:00 pm  4:00 pm at CMSA, 20 Garden St, G10 
CMSA FLUID DYNAMICS SEMINAR 
Tamer A. Zaki (JOHNS HOPKINS UNIVERSITY) 
The Onset of Chaos in Shear Flows 

May 15, 2019, 3:00 pm  4:00 pm at CMSA, 20 Garden St, G10 
CMSA METRIC LIMITS OF CALABIYAU MANIFOLDS LECTURE SERIES 
Valentino Tosatti (NORTHWESTERN UNIVERSITY) 
A priori estimates 

May 10, 2019, 3:00 pm  4:00 pm at CMSA, 20 Garden St, G10 
CMSA TOPICAL ASPECTS OF CONDENSED MATTER SEMINAR 
Michael Zaletel (UC BERKELEY) 
Threepartite entanglement in CFTs and chiral topological orders 

May 09, 2019, 10:30 am at CMSA, 20 Garden St, G10 
HARVARD/MIT ALGEBRAIC GEOMETRY SEMINAR 
Igor Krylov (KOREA INSTITUTE FOR ADVANCED STUDY) 
Birational rigidity of low degree del Pezzo fibrations 

May 07, 2019, 3:00 pm at Science Center 507 
CMSA MATHEMATICAL PHYSICS SEMINAR 
Dennis Borisov (AARHUS/CMSA) 
Global shifted potentials for 2shifted symplectic structures 

May 06, 2019, 12 pm  1 pm at CMSA, 20 Garden St, G10 
CMSA SPECIAL TALK 
Ming Hu (PICOWER INSTITUTE FOR LEARNING AND MEMORY, MIT) 
The Retinotopic Representation of the Visual Field in Early Visual Cortex  A Geometric View 

May 06, 2019, 2:15 pm at CMSA, 20 Garden St, G10 
CMSA FLUID DYNAMICS SEMINAR 
David Sondak (IACS, HARVARD UNIVERSITY) 
Towards Machine Learning for Cataloguing Optimal Solutions in Turbulent Convection 

May 01, 2019, 3:00 pm  4:00 pm at CMSA, 20 Garden St, G02 
NUMBER THEORY SEMINAR 
Romyar Sharifi (UCLA) 
Iwasawa modules in higher codimension 

May 01, 2019, 3:00  4:00 pm at Science Center 507 
MATHEMATICAL PICTURE LANGUAGE SEMINAR 
Shawn Xingshan Cui (VIRGINIA POLYTECHNIC INSTITUTE AND STATE UNIVERSITY) 
Four dimensional topological quantum field theories from Gcrossed braided categories 

April 30, 2019, 3:00 pm at Jefferson 356 
DIFFERENTIAL GEOMETRY SEMINAR 
Adam Jacob (UC DAVIS) 
Adiabatic limits of YangMills connections on collapsing K3 surfaces 

April 30, 2019, 5:45 pm at CMSA, 20 Garden St, G10 
OPEN NEIGHBORHOOD SEMINAR 
Alissa Crans (LOYOLA MARYMOUNT) 
Matrices, Reflections, and Knots, oh my! 

April 29, 2019, 4:30 pm at Science Center 507 
CMSA MATHEMATICAL PHYSICS SEMINAR 
Zili Zhang (UNIVERSITY OF MICHIGAN) 
P=W, a strange identity for Dynkin diagrams 

April 29, 2019, 12:00 pm  1:00 pm at CMSA, 20 Garden St, G02 
CMSA SPECIAL SEMINAR 
Maissam Barkeshli (UNIVERSITY OF MARYLAND) 
Relative anomalies in (2+1)D symmetry enriched topological states 

April 26, 2019, 10:30 am at CMSA, 20 Garden St, G10 
CMSA GENERAL RELATIVITY SEMINAR 
Armando Cabrera Pacheco (UNIVERSITäT TüBINGEN) 
Asymptotically flat extensions with charge 

April 26, 2019, 2:303:30 pm at CMSA, 20 Garden Street, G02 
CMSA SPECIAL SEMINAR 
Zhouli Xu (MIT) 
The intersection form of spin 4manifolds and Pin(2)equivariant Mahowald invariants 

April 26, 2019, 1:30 pm2:30 pm at CMSA, 20 Garden St, G10 
GAUGETOPOLOGYSYMPLECTIC SEMINAR 
Jennifer Hom (GEORGIA TECH) 
Heegaard Floer and homology cobordism 

April 26, 2019, 3:30 pm at Science Center 507 
CMSA FLUID DYNAMICS SEMINAR 
Neel Patel (UNIVERSITY OF MICHIGAN) 
Local Existence and BlowUp for SQG Patches 

April 25, 2019, 12 pm  1 pm at CMSA, 20 Garden St, G10 
JOINT CMSA AND DEPARTMENT OF MATHEMATICS RANDOM MATRIX AND PROBABILITY THEORY SEMINAR 
Benjamin Fehrman (OXFORD UNIVERSITY) 
Pathwise wellposedness of nonlinear diffusion equations with nonlinear, conservative noise 

April 25, 2019, 4:30 pm 5:30 pm at CMSA, 20 Garden St, G10 
CMSA COLLOQUIUM 
Shengwu Li (HARVARD UNIVERSITY) 
Credible Mechanisms 

April 24, 2019, 4:30 pm 5:30 pm at CMSA, 20 Garden St, G10 
CMSA FLUID DYNAMICS SEMINAR 
Heng Xiao (VIRGINIA TECH) 
Turbulence Modeling in the Age of Data: From Data Assimilation to Machine Learning 

April 24, 2019, 3:00  4:00 pm at CMSA, 20 Garden St, G10 
NUMBER THEORY SEMINAR 
Yiannis Sakellaridis (RUTGERS) 
A new paradigm for the comparison of trace formulas 

April 24, 2019, 3:00  4:00 pm at Science Center 507 
TOPOLOGICAL ASPECTS OF CONDENSED MATTER SEMINAR 
Michael Freedman (MICROSOFT STATION Q) 
Quantum cellular automata in higher dimensions 

April 24, 2019, 10:30 am at CMSA Building, 20 Garden St, G10 
MATHEMATICAL PICTURE LANGUAGE SEMINAR 
YiHong Zhang (TSINGHUA UNIVERSITY) 
Quantum manybody computation on a small quantum computer 

April 23, 2019, 3:00 pm at Jefferson 356 
DIFFERENTIAL GEOMETRY SEMINAR 
YuWei Fan (HARVARD UNIVERSITY) 
Systolic inequality for K3 surfaces via stability conditions 

April 23, 2019, 4:00 pm at Science Center 507 
HARVARD/MIT ALGEBRAIC GEOMETRY SEMINAR 
Kalina Mincheva (YALE UNIVERSITY) 
Tropical Algebra 

April 23, 2019, 3:00 pm at Science Center 507 
LOGIC SEMINAR 
Sebastien Vasey (HARVARD UNIVERSITY) 
Weak factorization systems and stable independence 

April 22, 2019, 5:40 pm at Science Center 507 
CMSA MATHEMATICAL PHYSICS SEMINAR 
Yang Zhou (CMSA) 
Quasimap wallcrossing for GIT quotients 

April 22, 2019, 12:00 pm  1:00 pm at CMSA, 20 Garden St, G10 
CMSA GENERAL RELATIVITY SEMINAR 
Lydia Bieri (UNIVERSITY OF MICHIGAN) 
Logarithmic or Not Logarithmic 

April 19, 2019, 9:30 am  10:30 am at CMSA, 20 Garden St, G02 
CMSA METRIC LIMITS OF CALABIYAU MANIFOLDS LECTURE SERIES 
Valentino Tosatti (NORTHWESTERN UNIVERSITY) 
Noncollapsing degenerations II 

April 19, 2019, 3:00  4:00 pm at CMSA Building, 20 Garden St, G10 
GAUGETOPOLOGYSYMPLECTIC SEMINAR 
Aliakbar Daemi (SIMONS CENTER) 
Exotic Structures, Homology Cobordisms and ChernSimons Functional 

April 19, 2019, 3:30 pm at Science Center 507 
GENDER INCLUSIVITY IN MATHEMATICS SEMINAR 
Gelonia Dent (BROWN UNIVERSITY) 
Seeing Myself in Science: How Identity and Representation Impact Retention in STEM 

April 18, 2019, 3:30 pm at Emerson 105 
CMSA COLLOQUIUM 
YiZhuang You (UCSD) 
Machine Learning Physics: From Quantum Mechanics to Holographic Geometry 

April 17, 2019, 4:30 pm 5:30 pm at CMSA, 20 Garden St, G10 
NUMBER THEORY SEMINAR 
Brian Smithling (JOHNS HOPKINS UNIVERSITY) 
On Shimura varieties for unitary groups 

April 17, 2019, 3:00 pm at Science Center 507 
CMSA FLUID DYNAMICS SEMINAR 
Maziar Raissi (NVIDIA) 
Hidden Physics Models: Machine Learning of NonLinear Partial Differential Equations 

April 17, 2019, 3:00  4:00 pm at CMSA, 20 Garden Street, G02 
COLLOQUIUM 
Xinwen Zhu (CALTECH) 
Hilbert's twentyfirst problem for padic varieties 

April 16, 2019, 3:00 pm at Science Center 507 
DIFFERENTIAL GEOMETRY SEMINAR 
Connor Mooney (UC IRVINE) 
Minimizers of convex functionals with small degeneracy set 

April 16, 2019, 4:00 pm at Science Center 507 
MATHEMATICAL PICTURE LANGUAGE SEMINAR 
Emil Prodan (YESHIVA UNIVERSITY) 
Pushing index theorems into the Sobolev 

April 16, 2019, 3:00 pm at Jefferson 356 
LOGIC SEMINAR 
Rebecca Coulson (WEST POINT) 
Bipartite Metrically Homogeneous Graphs of Generic Type: Their Generic Theories and the Almost Sure Theories of their Ages 

April 15, 2019, 5:40 pm at Science Center 507 
OPEN NEIGHBORHOOD SEMINAR 
Lauren Williams (HARVARD UNIVERSITY) 
Combinatorics of shallow water waves (via the KP hierarchy) 

April 15, 2019, 4:30 pm at Science Center 507 
CMSA MATHEMATICAL PHYSICS SEMINAR 
Junliang Shen (MIT) 
Perverse sheaves in hyperKähler geometry 

April 15, 2019, 12:00  1:00 pm at CMSA, 20 Garden Street, G02 
CMSA METRIC LIMITS OF CALABIYAU MANIFOLDS 
Valentino Tosatti (NORTHWESTERN UNIVERSITY) 
Noncollapsing degenerations 

April 12, 2019, 3:00 pm at CMSA, 20 Garden St, G10 
GAUGETOPOLOGYSYMPLECTIC SEMINAR 
Joel Fish (UMASS BOSTON) 
Feral pseudoholomorphic curves and minimal sets 

April 12, 2019, 3:30 pm at Science Center 507 
HARVARDMITMSR COMBINATORICS SEMINAR 
Carly Klivans (BROWN UNIVERSITY) 
Flowfiring processes 

April 12, 2019, 4:45 pm 5:45 pm at Science Center 507 
CMSA GENERAL RELATIVITY SEMINAR 
Amir Babak Aazami (CLARK UNIVERSITY) 
Kähler metrics via Lorentzian geometry in dimension 4 

April 11, 2019, 3:00  4:00 pm at Science Center 411 
GENDER INCLUSIVITY IN MATHEMATICS SEMINAR 
Genevieve Walsh (TUFTS UNIVERSITY) 
Geometric Topology and Group Theory 

April 11, 2019, 4:30 pm  6 pm at Science Center Hall C 
THURSDAY SEMINAR 
Sander Kupers and Mike Hopkins (HARVARD UNIVERSITY) 
Discussion of two points 

April 11, 2019, 3:00  5:00 pm at Science Center 507 
JOINT CMSA AND DEPARTMENT OF MATHEMATICS RANDOM MATRIX AND PROBABILITY THEORY SEMINAR 
Rui Han (GEORGIA TECH) 
Spectral gaps in graphene structures 

April 11, 2019, 4:30 pm at CMSA, 20 Garden St, G10 
COLLOQUIUM 
Pietro Veronesi (UNIVERSITY OF CHICAGO) 
Inequality Aversion, Populism, and the Backlash Against Globalization 

April 10, 2019, 2:303:30 pm at CMSA, 20 Garden Street, G10 
CMSA SPECIAL SEMINAR 
Juven Wang (IAS) 
Quantum 4d YangMills and TimeReversal Symmetric 5d TQFT: New Higher Anomalies to AnyonicString/Brane Induced Topological Link Invariants 

April 10, 2019, 10:30 am at CMSA, 20 Garden St, G10 
FLUID DYNAMICS SEMINAR 
Luc Deike (PRINCETON UNIVERSITY) 
Wave breaking in ocean atmosphere interactions 

April 10, 2019, 3:00 pm at Science Center 530 
NUMBER THEORY SEMINAR 
Naser Talebi Zadeh (UNIVERSITY OF WISCONSIN) 
The Siegel variance formula for quadratic forms 

April 10, 2019, 3:00 PM at Science Center 507 
DIFFERENTIAL GEOMETRY SEMINAR 
Spiro Karigiannis (UNIVERSITY OF WATERLOO) 
A curious system of second order nonlinear PDEs for U(m)structures on manifolds 

April 09, 2019, 3:00 pm at Science Center 232 
JOINT CMSA AND DEPARTMENT OF MATHEMATICS RANDOM MATRIX AND PROBABILITY THEORY SEMINAR 
Giulio Biroli (ENS) 
Large deviations for the largest eigenvalues and eigenvectors of spiked random matrices 

April 09, 2019, 12:00  1:00 pm at CMSA, 20 Garden Street, G02 
MATHEMATICAL PICTURE LANGUAGE SEMINAR 
Claus Koestler (UNIVERSITY COLLEGE CORK, IRELAND) 
Markovianity as a distributional system 

April 09, 2019, 3:00 pm at Jefferson 356 
MATHEMATICAL PICTURE LANGUAGE SEMINAR 
Alina Vdovina (UNIVERSITY OF NEWCASTLE, UK) 
Higher dimensional picture languages 

April 09, 2019, 4:30 pm at Jefferson 356 
CMSA MATH PHYSICS SEMINAR 
Yoosik Kim (BOSTON UNIVERSITY) 
String polytopes and GelfandCetlin polytopes 

April 08, 2019, 12:00  1:00 pm at CMSA, 20 Garden St, G10 
LOGIC SEMINAR 
Douglas Blue (HARVARD UNIVERSITY) 
Equivalence relations and effective cardinality 

April 08, 2019, 5:40 pm at Science Center 507 
TOPOLOGICAL ASPECTS OF CONDENSED MATTER SEMINAR 
Adam Nahum (OXFORD UNIVERSITY) 
Emergent statistical mechanics of entanglement in random unitary circuits 

April 08, 2019, 10:00 am at CMSA, 20 Garden St, G10 
COLLOQUIUM 
Laura DeMarco (NORTHWESTERN UNIVERSITY) 
Complex dynamics and arithmetic equidistribution 

April 08, 2019, 3:00 pm at Science Center 507 
GAUGETOPOLOGYSYMPLECTIC SEMINAR 
Melissa Liu (COLUMBIA UNIVERSITY) 
The YangMills Equations over Klein Surfaces 

April 05, 2019, 3:30 pm at Science Center 507 
NUMBER THEORY SEMINAR 
Avner Ash (BOSTON COLLEGE) 
Resolutions of the Steinberg module for GL(n) 

April 04, 2019, 3:00 pm at Science Center Hall E *note different day and location* 
THURSDAY SEMINAR 
Ben Knudsen (HARVARD UNIVERSITY) 
Toward the immersion conjecture 

April 04, 2019, 3:00  5:00 pm at Science Center 507 
CMSA GENERAL RELATIVITY SEMINAR 
Marcus Khuri (STONY BROOK UNIVERSITY) 
Stationary Vacuum Black Holes in Higher Dimensions 

April 04, 2019, 3:00  4:00 pm at CMSA, 20 Garden Street, G02 
JOINT CMSA AND DEPARTMENT OF MATHEMATICS RANDOM MATRIX AND PROBABILITY THEORY SEMINAR 
Paul Bourgade (NYU) 
Logcorrelations and branching structures in analytic number theory 

April 04, 2019, 4:30 pm 5:30 pm at CMSA Building, 20 Garden St, G10 
COLLOQUIUM 
Christopher Hacon (UNIVERSITY OF UTAH) 
On the geometry of Algebraic varieties 

April 03, 2019, 3:00 pm at Science Center 507 
CMSA FLUID DYNAMICS SEMINAR 
Christopher Rycroft (HARVARD UNIVERSITY) 
The reference map technique for simulating complex materials and multibody interactions 

April 03, 2019, 4:00 pm at CMSA, 20 Garden Street, G10 
CMSA COLLOQUIUM 
Sarah Moshary (UNIVERSITY OF CHICAGO) 
Deregulation through Direct Democracy: Lessons from Liquor 

April 03, 2019, 2:303:30 pm at CMSA, 20 Garden Street, G10 
MATHEMATICAL PICTURE LANGUAGE SEMINAR 
Mikael Rordam (UNIVERSITY OF COPENHAGEN) 
Highlights of the Classification of Simple Nuclear C*Algebras 

April 02, 2019, 3:00 pm at Jefferson 356 
CMSA SPECIAL LECTURE SERIES ON DERIVED ALGEBRAIC/DIFFERENTIAL GEOMETRY 
Artan Sheshmani (CMSA) 
Examples and applications 2 (Part II) 

April 02, 2019, 3:00  4:30 pm at CMSA, 20 Garden St, G10 
MATHEMATICAL PICTURE LANGUAGE SEMINAR 
Magdalena Musat (UNIVERSITY OF COPENHAGEN) 
Quantum Correlations, Factorizable Channels, and the Connes Embedding Problem 

April 02, 2019, 4:00 pm at Jefferson 356 
DIFFERENTIAL GEOMETRY SEMINAR 
Ao Sun (MIT) 
Local Entropy and Generic Multiplicity One Singularities of Mean Curvature Flow of Surfaces 

April 02, 2019, 4:00 pm at Science Center 507 
LOGIC SEMINAR 
Elliot Glazer (HARVARD UNIVERSITY AND ZHEJIANG UNIVERSITY) 
Set theory with randomness 

April 01, 2019, 5:40 pm at Science Center 507 
CMSA MATH PHYSICS SEMINAR 
Athanassios S. Fokas (UNIVERSITY OF CAMBRIDGE) 
Asymptotics: the unified transform, a new approach to the Lindelöf Hypothesis, and the ultrarelativistic limit of the Minkowskian approximation of general relativity 

April 01, 2019, 12:00  1:00 pm at CMSA, 20 Garden St, G10 
OPEN NEIGHBORHOOD SEMINAR 
John Mackey (CARNEGIE MELLON UNIVERSITY) 
Tournaments having the most cycles 

April 01, 2019, 4:30 pm at Science Center 507 
GAUGETOPOLOGYSYMPLECTIC SEMINAR 
Chris Scaduto (SIMONS CENTER) 
Instantons and lattices of smooth 4manifolds with boundary 

March 29, 2019, 3:30 pm at Science Center 222 
GENDER INCLUSIVITY IN MATHEMATICS SEMINAR 
Eunice Kim (TUFTS UNIVERSITY) 
Dynamical Systems and Physical Phenomena 

March 28, 2019, 4:30 pm  6 pm at Science Center Hall E 
JOINT CMSA AND DEPARTMENT OF MATHEMATICS RANDOM MATRIX AND PROBABILITY THEORY SEMINAR 
Xuwen Chen (UNIVERSITY OF ROCHESTER) 
The Derivation of the Energycritical NLS from Quantum Manybody Dynamics 

March 28, 2019, 4:30  5:30 pm at CMSA, 20 Garden St, G02 
NUMBER THEORY SEMINAR 
KaiWen Lan (UNIVERSITY OF MINNESOTA, TWIN CITIES) 
Local systems of Shimura varieties: a comparison of two constructions 

March 27, 2019, 3:00 pm at Science Center 507 
CMSA COLLOQUIUM 
Tatyana Sharpee (SALK INSTITUTE FOR BIOLOGICAL STUDIES) 
Hyperbolic geometry of the olfactory space 

March 27, 2019, 5:15 pm  6:15 pm at CMSA, 20 Garden St, G10 
MATHEMATICAL PICTURE LANGUAGE SEMINAR 
Jinsong Wu (HARBIN INSTITUTE OF TECHNOLOGY, CHINA) 
Fourier analysis on fusion rings 

March 26, 2019, 3:00 pm at Jefferson 356 
CMSA SPECIAL LECTURE SERIES ON DERIVED ALGEBRAIC/DIFFERENTIAL GEOMETRY 
Artan Sheshmani (CMSA) 
Examples and applications 2 (Part II) 

March 26, 2019, 3:00  4:30 pm at CMSA, 20 Garden St, G10 
DIFFERENTIAL GEOMETRY SEMINAR 
TianJun Li (MINNESOTA) 
Geometry of symplectic log CalabiYau surfaces 

March 26, 2019, 4:00 pm at Science Center 507 
HARVARD/MIT ALGEBRAIC GEOMETRY SEMINAR 
Changho Han (HARVARD UNIVERSITY) 
'Almost K3' stable log surfaces and curves of genus 4 

March 26, 2019, 3:00 pm at Science Center 507 
LOGIC SEMINAR 
Justin Cavitt (HARVARD UNIVERSITY) 
Large Cardinals and Simpler Proofs 

March 25, 2019, 5:40 pm at Science Center 507 
CMSA MATHEMATICAL PHYSICS SEMINAR 
Eduardo Gonzalez (UNIVERSITY OF MASSACHUSETTS BOSTON) 
Stratifications in gauged GromovWitten theory 

March 25, 2019, 12:00  1:00 pm at CMSA, 20 Garden St, G10 
HARVARD  MIT  MSR COMBINATORICS SEMINAR 
Jim Haglund (UNIVERSITY OF PENNSYLVANIA) 
Three faces of the Delta Conjecture 

March 22, 2019, 4:15 pm at Science Center 507 
CMSA SPECIAL LECTURE SERIES ON DERIVED ALGEBRAIC/DIFFERENTIAL GEOMETRY 
Artan Sheshmani (CMSA) 
Examples and applications 2 (Part I) 

March 21, 2019, 3:00  4:30 pm at CMSA, 20 Garden St, G10 
CMSA FLUID DYNAMICS SEMINAR 
Paris Perdikaris (UNIVERSITY OF PENNSYLVANIA) 
Datadriven modeling of stochastic systems using physicsaware deep learning 

March 20, 2019, 3:00 PM  4:00 PM at CMSA, 20 Garden Street, G10 
CMSA COLLOQUIUM 
Sonia Jaffe (MICROSOFT) 
Quality Externalities on Platforms: The Case of Airbnb 

March 20, 2019, 4:30  5:30 pm at CMSA, 20 Garden St, G10 
CMSA SPECIAL LECTURE SERIES ON DERIVED ALGEBRAIC/DIFFERENTIAL GEOMETRY 
Artan Sheshmani (CMSA) 
Intersections of Lagrangians 

March 19, 2019, 3:00  4:30 pm at CMSA, 20 Garden St, G10 
GAUGETOPOLOGYSYMPLECTIC SEMINAR 
Emmy Murphy (NORTHWESTERN UNIVERSITY) 
Inductively collapsing Fukaya categories and flexibility 

March 15, 2019, 3:30 pm at Science Center 507 
BRANDEISHARVARDMITNORTHEASTERN JOINT COLLOQUIUM 
Emmy Murphy (NORTHWESTERN UNIVERSITY) 
Flexibility in contact and symplectic geometry 

March 14, 2019, Tea at 4:00 pm; Talk at 4:30 pm at Science Center Hall A 
CMSA SPECIAL LECTURE SERIES ON DERIVED ALGEBRAIC/DIFFERENTIAL GEOMETRY 
Artan Sheshmani (CMSA) 
Lagrangians and Lagrangian fibrations 

March 14, 2019, 3:00  4:30 pm at CMSA, 20 Garden St, G02 *note different room* 
JOINT CMSA AND DEPARTMENT OF MATHEMATICS RANDOM MATRIX AND PROBABILITY THEORY SEMINAR 
Anna Vershynina (UNIVERSITY OF HOUSTON) 
How fast can entanglement be generated in quantum systems? 

March 14, 2019, 5:45 pm at Science Center 232 *note different location* 
CMSA GENERAL RELATIVITY SEMINAR 
Peter Hintz (MIT) 
Stability of Minkowski space and polyhomogeneity of the metric 

March 14, 2019, 3:30 pm at Science Center 411 
CMSA COLLOQUIUM 
Greg Galloway (UNIVERSITY OF MIAMI) 
On the geometry and topology of initial data sets in General Relativity 

March 13, 2019, 5:15 PM  6:15 PM at CMSA, 20 Garden Street, G10 
NUMBER THEORY SEMINAR 
Samit Dasgupta (DUKE UNIVERSITY) 
On BrumerStark units 

March 13, 2019, 3:00 pm at Science Center 507 
CMSA SPECIAL SEMINAR 
Albrecht Klemm (UNIVERSITY OF BONN) 
Dbrane masses and the motivic Hodge conjecture 

March 13, 2019, 12:15  1:15 pm at CMSA, 20 Garden St, G10 
HARVARD/MIT ALGEBRAIC GEOMETRY SEMINAR 
Jake Levinson (UNIVERSITY OF WASHINGTON) 
BoijSöderberg Theory for Grassmannians 

March 12, 2019, 3:00 pm at Science Center 507 
MATHEMATICAL PICTURE LANGUAGE SEMINAR 
Youwei Zhao (UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA) 
A review of the surface code from an experimental perspective 

March 12, 2019, 3:00 pm at Jefferson 356 
CMSA SPECIAL LECTURE SERIES ON DERIVED ALGEBRAIC/DIFFERENTIAL GEOMETRY 
Artan Sheshmani (CMSA) 
Lagrangians and Lagrangian fibrations 

March 12, 2019, 3:00  4:30 pm at CMSA, 20 Garden St, G10 
DIFFERENTIAL GEOMETRY SEMINAR 
Yaiza Canzani (UNC) 
Understanding the growth of Laplace eigenfunctions 

March 12, 2019, 4:00 PM at Science Center 507 
LOGIC SEMINAR 
Cameron Freer (MIT) 
Computability of exchangeable sequences, arrays, and graphs 

March 11, 2019, 5:40 pm at Science Center 507 
CMSA SPECIAL SEMINAR 
Juven Wang (IAS) 
New Higher Anomalies and 3+1D Quantum Matter: From 4d YangMills Gauge Theory to 2d CP^N Sigma Model 

March 11, 2019, 4:15 pm at CMSA, 20 Garden St, G10 
CMSA SOCIAL SCIENCE APPLICATIONS FORUM 
Wes Pegden (CARNEGIE MELLON) 
Developing and applying theorems for the rigorous detection of gerrymandering in the realworld 

March 11, 2019, 4:00 pm at CMSA, 20 Garden St, G02 
SOCIAL SCIENCE APPLICATIONS FORUM 
Pietro Bonaldi (CARNEGIE MELLON UNIVERSITY) 
Synthetic Regression Discontinuity  Causal Identification with Machine Learning 

March 11, 2019, 2:30 PM at CMSA, 20 Garden Street, G02 
COLLOQUIUM 
Bhargav Bhatt (UNIVERSITY OF MICHIGAN) 
Title: Interpolating padic cohomology theories 

March 11, 2019, 3:00 PM at Science Center 507 
OPEN NEIGHBORHOOD SEMINAR 
Bill Dunham (HARVARD UNIVERSITY) 
A Recipe for π 

March 11, 2019, 4:30 pm at Science Center 507 
CMSA MATHEMATICAL PHYSICS SEMINAR 
Yu Pan (MIT) 
Augmentations and exact Lagrangian cobordisms. 

March 11, 2019, 12:00 PM  1:00 PM at CMSA, 20 Garden Street, G10 
CMSA METRIC LIMITS OF CALABIYAU MANIFOLDS 
Valentino Tosatti (NORTHWESTERN UNIVERSITY) 
Proof of Yau's Theorem 

March 08, 2019, 3:00  4:00 pm at CMSA, 20 Garden St, G10 
GAUGETOPOLOGYSYMPLECTIC SEMINAR 
Thomas Walpuski (MICHIGAN STATE UNIVERSITY) 
Superrigidity and Castelnuovo’s bound 

March 08, 2019, 3:30 PM at Science Center 507 
CMSA GENERAL RELATIVITY SEMINAR 
Laura Donnay (BLACK HOLE INITIATIVE) 
Carrollian physics at the blackhole horizon 

March 07, 2019, 3:00 PM  4:00 PM at Science Center 411 
SOCIAL SCIENCE APPLICATIONS FORUM 
Jura Liaukonyte (CORNELL UNIVERSITY) 
Background Noise? TV Advertising Affects Real Time Investor Behavior 

March 07, 2019, 2:30 PM at CMSA, 20 Garden Street, G02 
CMSA SPECIAL LECTURE SERIES ON DERIVED ALGEBRAIC/DIFFERENTIAL GEOMETRY: TUESDAYS & THURSDAYS BEGINNING FEBRUARY 5, 2019 
Artan Sheshmani (CMSA) 
Lecture 4: Cotangent complexes 

March 07, 2019, 3:00  4:30 pm at CMSA Building, 20 Garden St, G10 
JOINT CMSA AND DEPARTMENT OF MATHEMATICS RANDOM MATRIX AND PROBABILITY THEORY SEMINAR 
Ilya Kachkovskiy (MICHIGAN STATE) 
Localization and delocalization for interacting 1D quasiperiodic particles 

March 06, 2019, 4:15 pm at Science Center 411 *note unusual day and location* 
CMSA FLUID DYNAMICS SEMINAR 
Zhong Yi Wan (MIT) 
Machine learning the kinematics of spherical particles in fluid flows 

March 06, 2019, 3:00 4:00 PM at CMSA, 20 Garden Street, G02 
NUMBER THEORY SEMINAR 
Nicholas Triantafillou (MIT) 
The Method of ChabautyColemanSkolem for Restrictions of Scalars 

March 06, 2019, 3:00 pm at Science Center 507 
CMSA COLLOQUIUM 
Philippe Sosoe (CORNELL UNIVERSITY) 
A sharp transition for Gibbs measures associated to the nonlinear Schrödinger equation 

March 06, 2019, 2:303:30 PM at CMSA, 20 Garden Street, G10 
DIFFERENTIAL GEOMETRY SEMINAR 
Tristan Collins (MIT) 
The Inverse MongeAmpere flow 

March 05, 2019, 4:00 PM at Science Center 507 
MATHEMATICAL PICTURE LANGUAGE SEMINAR 
Kaifeng Bu (HARVARD UNIVERSITY AND ZHEJIANG UNIVERSITY) 
Efficient classical simulation of Clifford circuits with nonstabilizer input states 

March 05, 2019, 3:00 PM at Jefferson 356 
COLLOQUIUM 
Mihnea Popa (NORTHWESTERN UNIVERSITY) 
Dmodules in birational and complex geometry 

March 04, 2019, 3:00 pm at Science Center 507 
CMSA MATHEMATICAL PHYSICS SEMINAR 
Zhenkun Li (MIT) 
Cobordism and gluing maps in sutured monopoles and applications 

March 04, 2019, 12:00  1:00 PM at CMSA, 20 Garden Street, G10 
GAUGETOPOLOGYSYMPLECTIC SEMINAR 
Peter Ozsváth (PRINCETON UNIVERSITY) 
Computing knot Floer homology 

March 01, 2019, 3:30 PM at Science Center 507 
CMSA METRIC LIMITS OF CALABIYAU MANIFOLDS LECTURE SERIES 
Valentino Tosatti (NORTHWESTERN UNIVERSITY) 
Introduction and Yau's Theorem 

March 01, 2019, 3:00 4:00 PM at CMSA, 20 Garden St, G10 
BRANDEISHARVARDMITNORTHEASTERN JOINT COLLOQUIUM 
Robert Lazarsfeld (STONY BROOK) 
How irrational is an irrational variety? 

February 28, 2019, Tea at 4:00 pm; Talk at 4:30 pm at Science Center Hall A 
CMSA COLLOQUIUM 
Ian Martin (LSE) 
Sentiment and Speculation in a Market with Heterogeneous Beliefs 

February 27, 2019, 2:303:30 PM at CMSA, 20 Garden Street, G10 
NUMBER THEORY SEMINAR 
Charlotte Chan (PRINCETON UNIVERSITY) 
Affine DeligneLusztig varieties at infinite level for GLn 

February 27, 2019, 3:00 PM at Science Center 507 
DIFFERENTIAL GEOMETRY SEMINAR 
Antoine Song (PRINCETON UNIVERSITY) 
Existence of infinitely many minimal hypersurfaces in closed manifolds 

February 26, 2019, 4:00 PM at Science Center 507 
MATHEMATICAL PICTURE LANGUAGE SEMINAR 
Fei Wei (HARVARD UNIVERSITY) 
Entropy of arithmetic functions and arithmetic compactifications 

February 26, 2019, 3:00 PM at Jefferson 356 
COLLOQUIUM 
Melanie Wood (UNIVERSITY OF WISCONSIN) 
Random groups from generators and relations, and unramified extensions of global fields 

February 26, 2019, 3:00 pm at Science Center 507 
HARVARD/MIT ALGEBRAIC GEOMETRY SEMINAR 
Ethan Cotterill (UNIVERSIDADE FEDERAL FLUMINENSE) 
Real inflection points of real linear series on real (hyper)elliptic curves (joint with I. Biswas and C. Garay López) 

February 26, 2019, 3:00 pm at Science Center B10 *note different location 
OPEN NEIGHBORHOOD SEMINAR 
Joe Harris (HARVARD UNIVERSITY) 
Poncelet's theorem and the birth of modern algebraic geometry 

February 25, 2019, 4:30 PM at Science Center 507 
LOGIC SEMINAR 
Nathanael Ackerman (HARVARD UNIVERSITY) 
Entropy of Invariant Measures 

February 25, 2019, 5:40 PM at Science Center 507 
CMSA SPECIAL SEMINAR 
Shinobu Hosono (GAKUSHUIN UNIVERSITY) 
Double cover family of K3 surfaces and mirror symmetry 

February 25, 2019, 1:002:00 PM at CMSA, 20 Garden Street, G10 
CMSA MATH PHYSICS SEMINAR 
Hossein Movasati (IMPA) 
Modular vector fields 

February 25, 2019, 12:00  1:00 PM at CMSA, 20 Garden St, G10 
GAUGETOPOLOGYSYMPLECTIC SEMINAR 
John Baldwin (BOSTON COLLEGE) 
Instanton Lspace knots 

February 22, 2019, 3:30 PM at Science Center 507 
SOCIAL SCIENCE APPLICATIONS FORUM 
Bobby PakzadHurson (BROWN UNIVERSITY) 
Crowdsourcing and Optimal Market Design 

February 22, 2019, 3:00 PM at CMSA Building, 20 Garden St, G02 
JOINT CMSA AND DEPARTMENT OF MATHEMATICS RANDOM MATRIX AND PROBABILITY THEORY SEMINAR 
Michael Loss (GEORGIA TECH) 
Some results for functionals of AharonovBohm type 

February 21, 2019, 4:30 pm at CMSA, 20 Garden St, G10 
THURSDAY SEMINAR 
Morgan Opie (HARVARD UNIVERSITY) 
Hopf algebras, Witt vectors, and BrownGitler spectra, ctd 

February 21, 2019, 3:00 5:00 PM at Sci Center Hall E 
CMSA GENERAL RELATIVITY SEMINAR 
HsinYu Chen (BLACK HOLE INITIATIVE) 
Measuring the Hubble Constant with Gravitational Waves 

February 21, 2019, 3:00 4:00 PM at Sci Center 411 
COLLOQUIUM 
June Huh (PRINCETON UNIVERSITY) 
Lorentzian polynomials 

February 21, 2019, 3:00 PM at Science Center 507 
CMSA COLLOQUIUM 
Michael Woodford (COLUMBIA UNIVERSITY) 
Optimally Imprecise Memory and Biased Forecasts 

February 20, 2019, 4:30 pm at CMSA, 20 Garden St, G10 
CMSA SPECIAL SEMINAR 
Quan Wen (HEFEI NATIONAL LABORATORY FOR PHYSICAL SCIENCES AT THE MICROSCOPE) 
Motor Systems: Searching for Principles 

February 20, 2019, 1:15 PM at CMSA, 20 Garden St, G10 
NUMBER THEORY SEMINAR 
Lillian Pierce (DUKE UNIVERSITY) 
Recent progress on understanding class groups of number fields 

February 20, 2019, 3:00 PM at Science Center 507 
CMSA FLUID DYNAMICS SEMINAR 
Xiaolin Wang (SEAS, HARVARD) 
The effect of piezoelectric material on the stability of flexible flags 

February 20, 2019, 3:004:00 PM at CMSA, 20 Garden St, G10 
CMSA SPECIAL SEMINAR 
Feng Luo (RUTGERS UNIVERSITY) 
Volume and rigidity of hyperbolic polyhedral 3manifolds 

February 19, 2019, 10:30  11:15 am at CMSA, 20 Garden St, G02 
CMSA SPECIAL SEMINAR 
Xu Xu (WUHAN UNIVERSITY) 
Rigidity of sphere packing on triangulated 3manifolds 

February 19, 2019, 11:15 am  12:00 pm at CMSA, 20 Garden St, G02 
DIFFERENTIAL GEOMETRY SEMINAR 
Valentino Tosatti (NORTHWESTERN UNIVERSITY) 
Ricciflat metrics and dynamics on K3 surfaces 

February 19, 2019, 4:00 pm at Science Center 507 
HARVARD/MIT ALGEBRAIC GEOMETRY SEMINAR 
Maksym Fedorchuk (BOSTON COLLEGE) 
Standard models of low degree del Pezzo fibrations 

February 19, 2019, 3:00 pm at MIT 2147 
HARVARDMITMSR COMBINATORICS SEMINAR 
Sylvie Corteel (CNRS/UC BERKELEY) 
Arctic curves for bounded Lecture Hall Tableaux 

February 15, 2019, 3:30 pm at Science Center 530 (SC 232  backup location) 
CMSA SPECIAL ALGEBRAIC GEOMETRY SEMINAR 
Jin Cao (TSINGHUA UNIVERSITY) 
Elliptic motives and related topics 

February 15, 2019, 3:00 pm at CMSA, 20 Garden St, G10 
GAUGETOPOLOGYSYMPLECTIC SEMINAR 
Cagatay Kutluhan (BUFFALO) 
Can Floertheoretic invariants detect overtwisted contact structures? 

February 15, 2019, 3:30 pm at Science Center 507 
BRANDEISHARVARDMITNORTHEASTERN JOINT COLLOQUIUM 
Allen Knutson (CORNELL UNIVERSITY) 
Schubert calculus and quiver varieties 

February 14, 2019, Tea at 4:00 pm; Talk at 4:30 pm at Science Center Hall A 
CMSA GENERAL RELATIVITY SEMINAR 
Charles Marteau (ECOLE POLYTECHNIQUE) 
Null hypersurfaces and ultrarelativistic physics in gravity 

February 14, 2019, 3:00 pm at Science Center 411 
THURSDAY SEMINAR 
Morgan Opie (HARVARD UNIVERSITY) 
Hopf algebras, Witt vectors, and BrownGitler spectra 

February 14, 2019, 3:00  4:30 pm at Science Center 507 
JOINT CMSA AND DEPARTMENT OF MATHEMATICS RANDOM MATRIX AND PROBABILITY THEORY SEMINAR 
Nike Sun (MIT) 
Capacity lower bound for the Ising perceptron 

February 14, 2019, 4:30 pm at CMSA, 20 Garden St, G10 
CMSA HODGE AND NOETHERLEFSCHETZ LOCI SEMINAR 
Hossein Movasati (IMPA) 
Foliations and Hodge loci 

February 13, 2019, 1:30  3:00 pm at CMSA, 20 Garden St, G10 
NUMBER THEORY SEMINAR 
Preston Wake (INSTITUTE FOR ADVANCED STUDY) 
Variation of Iwasawa invariants in residually reducible Hida families 

February 13, 2019, 3:00 pm at Science Center 507 
CMSA SPECIAL ALGEBRAIC GEOMETRY SEMINAR 
Qingyuan Jiang (IAS) 
Categorical duality between joins and intersections 

February 13, 2019, 3:00 pm at CMSA Building, 20 Garden St, G10 
CMSA COLLOQUIUM 
Christian Santangelo (UNIVERSITY OF MASSACHUSETTS AT AMHERST) 
4D printing with folding forms 

February 13, 2019, 4:30 pm at CMSA, 20 Garden St, G10 
CMSA SPECIAL LECTURE SERIES ON DERIVED ALGEBRAIC/DIFFERENTIAL GEOMETRY: TUESDAYS & THURSDAYS BEGINNING FEBRUARY 5, 2019 
Artan Sheshmani (CMSA) 
Lecture 3: Derived Artin stacks 

February 12, 2019, 3:00  4:30 pm at CMSA Building, 20 Garden St, G10 
MATHEMATICAL PICTURE LANGUAGE SEMINAR 
Liang Kong (SHENZHEN INSTITUTE FOR QUANTUM SCIENCE AND ENGINEERING AND SOUTHERN UNIVERSITY OF SCIENCE AND TECHNOLOGY) 
A unified mathematical theory of gapped and gapless boundaries of 2d topological orders 

February 12, 2019, 3:00 pm at Jefferson 356 
DIFFERENTIAL GEOMETRY SEMINAR 
Mitchell Faulk (COLUMBIA UNIVERSITY) 
Yau's theorem on Asymptotically Conical manifolds with prescribed decay rates 

February 12, 2019, 4:00 pm at Science Center 507 
HARVARD/MIT ALGEBRAIC GEOMETRY SEMINAR 
Dan Abramovich (BROWN UNIVERSITY) 
Moduli technique in resolution of singularities 

February 12, 2019, 3:00 pm at Science Center 507 
COLLOQUIUM 
Hector Pasten (PONTIFICIA UNIVERSIDAD CATOLICA DE CHILE) 
Modular forms and the ABC conjecture 

February 11, 2019, 3:00 pm at Science Center 507 
CMSA MATHEMATICAL PHYSICS SEMINAR 
Tristan Collins (MIT) 
Stability and Nonlinear PDE in mirror symmetry 

February 11, 2019, 12:00  1:00 pm at CMSA, 20 Garden St, G10 
CMSA SPECIAL LECTURE SERIES ON DERIVED ALGEBRAIC/DIFFERENTIAL GEOMETRY: TUESDAYS & THURSDAYS BEGINNING FEBRUARY 5, 2019 
Artan Sheshmani (CMSA) 
Lecture 2: Grothendieck topologies and homotopy descent 

February 07, 2019, 3:00  4:30 pm at CMSA Building, 20 Garden St, G10 
JOINT CMSA AND DEPARTMENT OF MATHEMATICS RANDOM MATRIX AND PROBABILITY THEORY SEMINAR 
Ramis Movassagh (IBM RESARCH) 
Generic Gaplessness, and Hamiltonian density of states from free probability theory 

February 07, 2019, 4:30 pm at Science Center 530 
CMSA COLLOQUIUM 
Ulrich Mueller (PRINCETON UNIVERSITY) 
Inference for the Mean 

February 07, 2019, 4:30 pm at CMSA Building, 20 Garden St, G10 
CMSA GENERAL RELATIVITY SEMINAR 
PeiKen Hung (MIT) 
The linear stability of the Schwarzschild spacetime in the harmonic gauge: even part 

February 07, 2019, 3:00 pm at Science Center 411 
NUMBER THEORY SEMINAR 
Rong Zhou (IAS) 
Motivic cohomology of quaternionic Shimura varieties and level raising 

February 06, 2019, 3:00 pm at Science Center 507 
CMSA HODGE AND NOETHERLEFSCHETZ LOCI SEMINAR 
Hossein Movasati (IMPA) 
Integrality properties of CY modular forms 

February 06, 2019, 1:30  3:00 pm at CMSA Building, 20 Garden St, G10 
HARVARD/MIT ALGEBRAIC GEOMETRY SEMINAR 
Mihai Fulger (UNIVERSITY OF CONNECTICUT) 
Seshadri constants for bundles 

February 05, 2019, 3:00 pm at MIT 2142 
CMSA SPECIAL LECTURE SERIES ON DERIVED ALGEBRAIC/DIFFERENTIAL GEOMETRY: TUESDAYS & THURSDAYS BEGINNING FEBRUARY 5, 2019 
Artan Sheshmani (CMSA) 
Lecture 1: Model and NAcategories 

February 05, 2019, 3:00  4:30 pm at CMSA Building, 20 Garden St, G10 
DIFFERENTIAL GEOMETRY SEMINAR 
Xin Zhou (UNIVERSITY OF CALIFORNIA AT SANTA BARBARA) 
Multiplicity One Conjecture in Minmax theory 

February 05, 2019, 4:00 pm at Science Center 507 
SNAPSHOTS OF MATH AT HARVARD 
Ben Knudsen, Alison Miller, Sebastien Picard, Bena Tshishiku (HARVARD UNIVERSITY) 


February 04, 2019, 4:30 pm at Science Center 507 
CMSA MATHEMATICAL PHYSICS SEMINAR 
Netanel (Nati) RubinBlaier (HARVARD & BRANDEIS) 
Abelian cycles, and homology of symplectomorphism groups 

February 04, 2019, 12:00  1:00 pm at CMSA Building, 20 Garden St, G10 
LOGIC SEMINAR 
Sebastien Vasey (HARVARD UNIVERSITY) 
On categoricity in successive cardinals 

February 04, 2019, 5:40 pm at Science Center 507 
COLLOQUIUM 
Dana Mendelson (UNIVERSITY OF CHICAGO) 
Probabilistic methods and longtime dynamics for nonlinear dispersive PDEs 

February 04, 2019, 3:00 pm at Science Center 507 
HARVARD  MIT COMBINATORICS SEMINAR 
Michael Wheeler (THE UNIVERSITY OF MEBOURNE) 
Matrix product expressions for Macdonald polynomials and combinatorial applications 

February 01, 2019, 3:30 pm at Science Center 530 (SC 309a  backup location) 
GAUGETOPOLOGYSYMPLECTIC SEMINAR 
Zoltán Szabó (PRINCETON UNIVERSITY) 
Algebraic methods in knot Floer homology 

February 01, 2019, 3:30 pm at Science Center 507 
CMSA GENERAL RELATIVITY SEMINAR 
Shahar Hadar (HARVARD UNIVERSITY) 
Latetime behavior of nearextremal black holes from symmetry 

January 31, 2019, 3:00  4:00 pm at Science Center 232 *note different location* 
COLLOQUIUM 
Simion Filip (HARVARD AND IAS) 
Discrete groups, Lyapunov exponents, and Hodge theory 

January 31, 2019, 4:00 pm at Science Center 507 
CMSA COLLOQUIUM 
Richard B. Freeman (HARVARD UNIVERSITY AND NBER) 
Innovation in Cell Phones in the US and China: Who Improves Technology Faster? 

January 30, 2019, 4:30 pm at CMSA Building, 20 Garden St, G10 
CMSA HODGE AND NOETHERLEFSCHETZ LOCI SEMINAR 
Hossein Movasati (IMPA) 
Constant Yukawa couplings 

January 30, 2019, 1:30  3:00 pm at CMSA Building, 20 Garden St, G10 
DIFFERENTIAL GEOMETRY SEMINAR 
Enno Kessler (HARVARD CMSA) 
Supergeometry, Super Riemann Surfaces and the Superconformal Action 

January 29, 2019, 4:00 pm at Science Center 507 
CMSA MATHEMATICAL PHYSICS SEMINAR 
Per Berglund (UNIVERSITY OF NEW HAMPSHIRE) 
A Generalized Construction of CalabiYau Manifolds and Mirror Symmetry 

January 28, 2019, 12:00  1:00 pm at CMSA Building, 20 Garden St, G10 
CMSA HODGE AND NOETHERLEFSCHETZ LOCI SEMINAR 
Hossein Movasati (IMPA) 
A new model for modular curves 

January 23, 2019, 1:30  3:00 pm at CMSA Building, 20 Garden St, G10 
CMSA HODGE AND NOETHERLEFSCHETZ LOCI SEMINAR 
Hossein Movasati (IMPA) 
Algebraic BCOV anomaly equation 

January 16, 2019, 1:30  3:00 pm at CMSA Building, 20 Garden St, G10 
CMSA TOPOLOGICAL ASPECTS OF CONDENSED MATTER SEMINAR 
Lukasz Fidkowski (UNIVERSITY OF WASHINGTON) 
Nontrivial quantum cellular automata in 3 dimensions 

January 08, 2019, 2:00 PM at CMSA Building, 20 Garden St, G10 
STUDENT/POSTDOC SYMPLECTIC GEOMETRY SEMINAR 
Fenglong You (UNIVERSITY OF ALBERTA) 
Mirror theorems for orbifold and relative GromovWitten invariants 

December 14, 2018, 2:00  3:15 pm at Science Center 507 
CMSA COLLOQUIUM 
Zhiwei Yun (MIT) 
Shtukas: what and why 

December 12, 2018, 4:30 pm at CMSA Building, 20 Garden St, G10 
CMSA HODGE AND NOETHERLEFSCHETZ LOCI SEMINAR 
Hossein Movasati (IMPA) 
A conjectural Hodge locus for cubic tenfold 

December 12, 2018, 1:30  3:00 pm at CMSA Building, 20 Garden St, G10 
DIFFERENTIAL GEOMETRY SEMINAR 
Lino Amorim (KANSAS STATE) 
Mirror symmetry for an orbifold sphere 

December 11, 2018, 4:00 pm at Science Center 507 
CMSA TOPOLOGICAL ASPECTS OF CONDENSED MATTER SEMINAR 
Anders Sandvik (BOSTON UNIVERSITY AND INSTITUTE OF PHYSICS, CAS, BEIJING) 
Quantum Monte Carlo simulations of exotic states in 2D quantum magnets 

December 10, 2018, 10:00  11:30 am at CMSA Building, 20 Garden St, G02 
CMSA MATHEMATICAL PHYSICS SEMINAR 
Fenglong You (UNIVERSITY OF ALBERTA) 
Relative and orbifold GromovWitten theory 

December 10, 2018, 12:00  1:00 pm at CMSA Building, 20 Garden St, G10 
GAUGETOPOLOGYSYMPLECTIC SEMINAR 
Raphael Zentner (REGENSBURG) 
Irreducible SL(2,C)representations of homology3spheres 

December 07, 2018, 3:30 pm at Science Center 507 
STUDENT/POSTDOC SYMPLECTIC GEOMETRY SEMINAR 
Patrick Clarke (DREXEL UNIVERSITY AND CMSA) 
Homological mirror symmetry for toric LandauGinzburg models: dual pairs, Tduality, and curved Ainfinity categories 

December 07, 2018, 2:00  3:15 pm at Science Center 507 
THURSDAY SEMINAR 
Tomer Schlank (HEBREW UNIVERSITY OF JERUSALEM) 
Ambidexterity in localizations of spectra 

December 06, 2018, 3:00  4:00 pm *note earlier ending time* at Science Center 507 
CMSA SPECIAL MATHEMATICAL PHYSICS SEMINAR 
Qintao Chen () 
Recent progress of various Volume Conjectures for links as well as 3manifolds 

December 06, 2018, 3:30  4:30 pm at Science Center 530 
INFORMAL GEOMETRY AND DYNAMICS SEMINAR 
Curtis McMullen (HARVARD UNIVERSITY) 
The failure of Ratner’s theorem for moduli spaces 

December 05, 2018, 4:00 pm at Science Center 530 
CMSA HODGE AND NOETHERLEFSCHETZ LOCI SEMINAR 
Hossein Movasati (IMPA) 
Some explicit Hodge cycles 

December 05, 2018, 1:30  3:00 pm at CMSA Building, 20 Garden St, G02 
CMSA COLLOQUIUM 
Robert McCann (UNIVERSITY OF TORONTO) 
Displacement convexity of Boltzmann's entropy characterizes positive energy in general relativity 

December 05, 2018, 4:30 pm at CMSA Building, 20 Garden St, G10 
NUMBER THEORY SEMINAR 
Sol Friedberg (BOSTON COLLEGE) 
Langlands functoriality, the converse theorem, and integral representations of Lfunctions 

December 05, 2018, 3:00 pm at Science Center 507 
CMSA GENERAL RELATIVITY SEMINAR 
Pengzi Miao (UNIVERSITY OF MIAMI) 
Localization of the Penrose inequality and variation of quasilocal mass 

December 05, 2018, 11:00 am  12:00 pm at CMSA Building, 20 Garden St, G02 
JOINT DEPARTMENT OF MATHEMATICS AND CMSA RANDOM MATRIX AND PROBABILITY THEORY SEMINAR 
Omer Angel (UNIVERSITY OF BRITISH COLUMBIA) 
Balanced excited random walks 

December 05, 2018, 3:00  4:00 pm at CMSA Building, 20 Garden St, G02 
DIFFERENTIAL GEOMETRY SEMINAR 
Beomjun Choi (COLUMBIA UNIVERSITY) 
Evolution of NonCompact Hypersurface By Inverse Mean Curvature 

December 04, 2018, 4:00 pm at Science Center 507 
LOGIC SEMINAR 
Tibor Beke (UNIVERSITY OF MASSACHUSETTS  LOWELL) 
Schanuel functors and the Grothendieck (semi)ring of some theories 

December 03, 2018, 5:40 pm at Science Center 507 
CMSA MATHEMATICAL PHYSICS SEMINAR 
Monica Pate (HARVARD UNIVERSITY) 
Gravitational Memory in Higher Dimensions 

December 03, 2018, 12:00  1:00 pm at CMSA Building, 20 Garden St, G02 
CMSA TOPOLOGICAL ASPECTS OF CONDENSED MATTER SEMINAR 
Claudio Chamon (BOSTON UNIVERSITY) 
Manybody scar states with topological properties in 1D, 2D, and 3D 

December 03, 2018, 10:00  11:30 am at CMSA Building, 20 Garden St, G02 
STUDENT/POSTDOC SYMPLECTIC GEOMETRY SEMINAR 
Daniel Pomerleano (UNIVERSITY OF MASSACHUSETTS  BOSTON) 
Degenerations from Floer cohomology 

November 30, 2018, 2:00  3:15 pm at Science Center 507 
GAUGETOPOLOGYSYMPLECTIC SEMINAR 
John Pardon (PRINCETON UNIVERSITY) 
Structural results in wrapped Floer theory 

November 30, 2018, 3:30 pm at Science Center 507 
THURSDAY SEMINAR 
Sanath Devalapurkar () 
Stable splittings for classifying spaces of compact Lie groups 

November 29, 2018, 3:00 pm  5:00 pm at Science Center 507 
CMSA HODGE AND NOETHERLEFSCHETZ LOCI SEMINAR 
Roberto Villaflor () 
Periods of Complete Intersection Algebraic Cycles 

November 28, 2018, 1:30  3:00 pm at CMSA Building, 20 Garden St, G10 
CMSA COLLOQUIUM 
Robert Haslhofer (UNIVERSITY OF TORONTO) 
Recent progress on mean curvature flow 

November 28, 2018, 4:30 pm at CMSA Building, 20 Garden St, G10 
NUMBER THEORY SEMINAR 
John Bergdall (BRYN MAWR COLLEGE) 
Upper bounds for constant slope padic families of modular forms 

November 28, 2018, 3:00 pm at Science Center 507 
LOGIC COLLOQUIUM 
Charles Parsons (HARVARD UNIVERSITY) 
Kreisel and Gödel 

November 28, 2018, 3:00  4:00 pm at Logic Center, 2 Arrow St, Rm 420 
JOINT DEPARTMENT OF MATHEMATICS AND CMSA RANDOM MATRIX AND PROBABILITY THEORY SEMINAR 
Sean O'Rourke () 
Universality and least singular values of random matrix products 

November 28, 2018, 3:00  4:00 pm at CMSA Building, 20 Garden St, G10 
DIFFERENTIAL GEOMETRY SEMINAR 
Bin Guo (COLUMBIA UNIVERSITY) 
Geometric estimates for complex MongeAmpere equations 

November 27, 2018, 4:00 pm at Science Center 507 
HARVARD/MIT ALGEBRAIC GEOMETRY SEMINAR 
Aaron Bertram (UTAH) 
Stability for Regular Coherent Sheaves 

November 27, 2018, 3:00 pm at MIT 2142 
CMSA MATHEMATICAL PHYSICS SEMINAR 
Charles Doran (ALBERTA) 
Feynman Amplitudes from CalabiYau Fibrations 

November 26, 2018, 12:00  1:00 pm at CMSA Building, 20 Garden St, G10 
CMSA HODGE AND NOETHERLEFSCHETZ LOCI SEMINAR 
Hossein Movasati (IMPA) 
Periods of algebraic cycles 

November 21, 2018, 1:30  3:00 pm at CMSA Building, 20 Garden St, G10 
DIFFERENTIAL GEOMETRY SEMINAR 
Vaughan Jones (VANDERBILT UNIVERSITY) 
A stroll around the subfactor zoo 

November 19, 2018, 2:00 pm at CMSA Building, 20 Garden St, G10 **note change in day and location** 
CMSA MATHEMATICAL PHYSICS SEMINAR 
Yusuf Baris Kartal (MIT) 
Distinguishing symplectic fillings using dynamics of Fukaya categories 

November 19, 2018, 12:00  1:00 pm at CMSA Building, 20 Garden St, G10 
CMSA COLLOQUIUM 
Xiaoqin Wang (JOHNS HOPKINS UNIVERSITY) 
Computational Principles of Auditory Cortex 

November 19, 2018, 3:00 pm *note special day and time* at CMSA Building, 20 Garden St, G10 
CMSA TOPOLOGICAL ASPECTS OF CONDENSED MATTER SEMINAR 
XiaoGang Wen (MIT) 
A classification of 3+1D topological orders 

November 19, 2018, 10:00  11:30 am at CMSA Building, 20 Garden St, G10 
BRANDEIS  HARVARD  MIT  NORTHEASTERN JOINT COLLOQUIUM 
Andrei Okounkov (COLUMBIA UNIVERSITY) 
New worlds for Lie theory 

November 15, 2018, Tea at 4:00 pm, Talk at 4:30 pm at Science Center Hall A 
CMSA GENERAL RELATIVITY SEMINAR 
Niky Kamran (MCGILL UNIVERSITY) 
Lorentzian Einstein metrics with prescribed conformal infinity 

November 14, 2018, 11:00 am at CMSA Building, 20 Garden St, G10 
JOINT DEPARTMENT OF MATHEMATICS AND CMSA RANDOM MATRIX AND PROBABILITY THEORY SEMINAR 
David Gamarnik (MIT AND HARVARD) 
Two Algorithmic Hardness Results in Spin Glasses and Compressive Sensing 

November 14, 2018, 3:00  4:00 pm at CMSA Building, 20 Garden St, G10 
NUMBER THEORY SEMINAR 
Eric Urban (COLUMBIA UNIVERSITY) 
Eisenstein congruences and Euler systems 

November 14, 2018, 3:00 pm at Science Center 507 
CMSA HODGE AND NOETHERLEFSCHETZ LOCI SEMINAR 
Hossein Movasati (IMPA) 
Integral Hodge conjecture for Fermat varieties 

November 14, 2018, 1:30  3:00 pm at CMSA Building, 20 Garden St, G10 
CMSA COLLOQUIUM 
Dusa McDuff (COLUMBIA UNIVERSITY) 
The virtual fundamental class in symplectic geometry 

November 14, 2018, 4:00 pm at CMSA Building, 20 Garden St, G10 
MATHEMATICAL PICTURE LANGUAGE SEMINAR 
William Norledge (PENN STATE) 
The adjoint braid arrangement as a free Lie algebra in species via the Steinmann relations 

November 13, 2018, 4:00 pm at Jefferson 356 
DIFFERENTIAL GEOMETRY SEMINAR 
Siyuan Lu (RUTGERS UNIVERSITY) 
On a localized Riemannian Penrose inequality 

November 13, 2018, 4:00 pm at Science Center 507 
LOGIC SEMINAR 
Rehana Patel (HARVARD UNIVERSITY) 
Around Cherlin's question on countable universal $H$free graphs 

November 12, 2018, 5:40 pm at Science Center 507 
OPEN NEIGHBORHOOD SEMINAR 
Laure Flapan (NORTHEASTERN UNIVERSITY) 
The Luroth problem: algebraic curves, field extensions, and beyond 

November 12, 2018, 4:30 pm at Science Center 507 
CMSA SPECIAL SEMINAR 
Nima ArkaniHamed (INSTITUTE FOR ADVANCED STUDY) 
Spacetime, Quantum Mechanics and Positive Geometry 

November 09, 2018, 12:00  1:30 pm at Science Center 507 
MATHEMATICAL PICTURE LANGUAGE SEMINAR 
Xun Gao (HARVARD AND MAX PLANCK INSTITUTE) 
Pictorial language in quantum computation 

November 09, 2018, 3:30 pm at Jefferson 256 
GAUGETOPOLOGYSYMPLECTIC SEMINAR 
Mohammed Abouzaid (COLUMBIA UNIVERSITY) 
A formalism for Floer theory with coefficients 

November 09, 2018, 3:30 pm at Science Center 507 
CMSA SPECIAL SEMINAR 
YangHui He (UNIVERSITY OF OXFORD) 
Deeplearning the Landscape 

November 09, 2018, 10:30 am  12:00 pm at Science Center 530 
SPECIAL DIFFERENTIAL GEOMETRY SEMINAR 
Simon Donaldson (STONY BROOK UNIVERSITY) 
Multivalued harmonic functions and NashMoser theory 

November 09, 2018, 2:00 pm at Science Center 507 
BRANDEIS  HARVARD  MIT  NORTHEASTERN JOINT COLLOQUIUM 
Steven Gubser (PRINCETON UNIVERSITY) 
Number theory and spacetime 

November 08, 2018, Tea at 4:00 pm, Talk at 4:30 pm at Tea: 100 Goldsmith; Talk: 317 Goldsmith 
THURSDAY SEMINAR 
Jeremy Hahn (HARVARD UNIVERSITY) 
The construction of BO/I_n 

November 08, 2018, 3:00 pm  5:00 pm at Science Center 507 
CMSA GENERAL RELATIVITY SEMINAR 
Jordan Keller (HARVARD UNIVERSITY) 
Linear Stability of Higher Dimensional Schwarzschild Black Holes 

November 07, 2018, 11:00 am at CMSA Building, 20 Garden St, G10 
JOINT DEPARTMENT OF MATHEMATICS AND CMSA RANDOM MATRIX AND PROBABILITY THEORY SEMINAR 
Wilhelm Schlag (YALE UNIVERSITY) 
On the BourgainDyatlov fractal uncertainty principle 

November 07, 2018, 3:00  4:00 pm at CMSA Building, 20 Garden St, G10 
INFORMAL GEOMETRY AND DYNAMICS SEMINAR 
Curtis McMullen (HARVARD UNIVERSITY) 
A Panorama of Teichmueller Curves 

November 07, 2018, 4:00 pm at Science Center 530 
CMSA SPECIAL LECTURE SERIES 
Hossein Movasati (IMPA) 
Hodge and NoetherLefschetz Loci Seminar 

November 07, 2018, 1:30  3:00 pm at CMSA Building, 20 Garden St, G10 
NUMBER THEORY SEMINAR 
Florian Herzig (UNIVERSITY OF TORONTO) 
Ordinary representations and locally analytic vectors for GL_n(Q_p) 

November 07, 2018, 3:00 pm at Science Center 507 
DIFFERENTIAL GEOMETRY SEMINAR 
Pengfei Guan (MCGILL UNIVERSITY) 
Interior curvature estimates for immersed hypersurfaces in R^{n+1} 

November 06, 2018, 4:00 pm at Science Center 507 
HARVARD/MIT ALGEBRAIC GEOMETRY SEMINAR 
Alex Perry (COLUMBIA UNIVERSITY) 
Stability conditions and cubic fourfolds 

November 06, 2018, 3:00 pm at Science Center 507 
CMSA MATH PHYSICS SEMINAR 
Siqi He (SIMONS CENTER) 
The KapustinWitten Equations, Opers and Khovanov Homology 

November 05, 2018, 12:00  1:00 PM at CMSA Building, 20 Garden St, G10 
LOGIC SEMINAR 
Gabriel Goldberg (HARVARD UNIVERSITY) 
Descending sequences in the Mitchell order 

November 05, 2018, 5:40 pm at Science Center 507 
STUDENT/POSTDOC SYMPLECTIC GEOMETRY SEMINAR 
Jingyu Zhao (HARVARD CMSA) 
A connection on symplectic cohomology 

November 02, 2018, 2:00  3:15 pm at Science Center 507 
GAUGETOPOLOGYSYMPLECTIC SEMINAR 
Laure Flapan (NORTHEASTERN UNIVERSITY) 
Monodromy of Kodaira fibrations 

November 02, 2018, 3:30 pm at Science Center 507 
THURSDAY SEMINAR 
Robert Burklund (MIT) 
Properties of BrownGitler spectra 

November 01, 2018, 3:00 pm  5:00 pm at Science Center 507 
NUMBER THEORY SEMINAR 
Chris Skinner (PRINCETON) 
Some recent results on Euler systems 

October 31, 2018, 3:00 pm at Science Center 507 
CMSA COLLOQUIUM 
Moon Duchin (TUFTS) 
Exploring the (massive) space of graph partitions 

October 31, 2018, 4:30 PM 5:30 PM at CMSA Building, 20 Garden Street, Room G10 
INFORMAL GEOMETRY AND DYNAMICS SEMINAR 
Ronen Mukamel (RICE UNIVERSITY) 
Teichmueller curves: Theory and exploration 

October 31, 2018, 4:00 pm at Science Center 530 
CMSA GENERAL RELATIVITY SEMINAR 
Alex Lupsasca (HARVARD UNIVERSITY) 
Polarization Whorls from M87 at the Event Horizon Telescope 

October 31, 2018, 11:00 am at CMSA Building, 20 Garden St, G10 
JOINT DEPARTMENT OF MATHEMATICS AND CMSA RANDOM MATRIX AND PROBABILITY THEORY SEMINAR 
Lauren Williams (HARVARD UNIVERSITY) 
Introduction to the asymmetric simple exclusion process (from a combinatorialist's point of view) 

October 30, 2018, 10:30 am at Science Center 507 *note special day, time & location* 
MATHEMATICAL PICTURE LANGUAGE SEMINAR 
Chunlan Jiang (HEBEI NORMAL UNIVERSITY) 
Similarity Invariants of Geometric Operators 

October 30, 2018, 4:00 pm at Jefferson 453 
DIFFERENTIAL GEOMETRY SEMINAR 
Sebastien Picard (HARVARD UNIVERSITY) 
Anomaly Flows and CalabiYau Manifolds with Torsion 

October 30, 2018, 4:00 pm at Science Center 507 
CMSA TOPOLOGICAL ASPECTS OF CONDENSED MATTER SEMINAR 
Dominic Williamson (YALE UNIVERSITY) 
Symmetry and topological order in tensor networks 

October 29, 2018, 10:00 am at CMSA Building, 20 Garden St, G10 
CMSA MATHEMATICAL PHYSICS SEMINAR 
Francois Greer (SIMONS CENTER) 
Rigid Varieties with Lagrangian Spheres 

October 29, 2018, 12:00  1:00 pm at CMSA Building, 20 Garden St, G10 
LOGIC SEMINAR 
Doug Blue (HARVARD UNIVERSITY) 
Sacks' embedding problem 

October 29, 2018, 5:40 pm at Science Center 507 
CMSA SOCIAL SCIENCE APPLICATIONS FORUM SPECIAL EDITION 
Daniel Marszalec (UNIVERSITY OF TOKYO) 
Auctions for complements: theories vs experiments 

October 26, 2018, 3:00 pm at CMSA Building, 20 Garden St, G02 
GAUGETOPOLOGYSYMPLECTIC SEMINAR 
Michael Hutchings (UC BERKELEY) 
Equivariant symplectic capacities 

October 26, 2018, 3:30 pm at Science Center 507 
STUDENT/POSTDOC SYMPLECTIC GEOMETRY SEMINAR 
**Canceled** Patrick Clarke (DREXEL UNIVERSITY AND CMSA) 
**Canceled** Homological mirror symmetry for toric LandauGinzburg models: dual pairs, Tduality, and curved Ainfinity categories 

October 26, 2018, 2:00  3:15 pm at Science Center 507 
CMSA SPECIAL SEMINAR 
John Loftin (RUTGERS UNIVERSITY) 
Equivariant minimal surfaces in real hyperbolic 3 and 4spaces 

October 26, 2018, 1:30 pm at CMSA Building, 20 Garden St, G10 
BRANDEIS  HARVARD  MIT  NORTHEASTERN JOINT COLLOQUIUM 
Gabor Szekelyhidi (UNIVERSITY OF NOTRE DAME) 
GromovHausdorff limits of Kahler manifolds 

October 25, 2018, Tea at 4:00 pm, Talk at 4:30 pm at Science Center Hall A 
THURSDAY SEMINAR 
Ben Knudsen (HARVARD UNIVERSITY) 
Braid groups and braid Thom spectra 

October 25, 2018, 3:00 pm  5:00 pm at Science Center 507 
NUMBER THEORY SEMINAR 
Wei Ho (UNIVERSITY OF MICHIGAN) 
Integral points on elliptic curves 

October 24, 2018, 3:00 pm at Science Center 507 
HARVARDMIT COMBINATORICS SEMINAR 
Bernd Sturmfels (MPI LEIPZIG AND UC BERKELEY) 
Moment varieties of measures on polytopes 

October 24, 2018, 4:15  5:15 pm at Science Center Hall E 
JOINT DEPARTMENT OF MATHEMATICS AND CMSA RANDOM MATRIX AND PROBABILITY THEORY SEMINAR 
Tselil Schramm (HARVARD UNIVERSITY AND MIT) 
(Nearly) Efficient Algorithms for the Graph Matching Problem in Correlated Random Graphs 

October 24, 2018, 3:00  4:00 pm at CMSA Building, 20 Garden St, G02 *note different location* 
LOGIC COLLOQUIUM 
Sam Buss (UC SAN DIEGO) 
Bounded Arithmetic, Expanders, and Monotone Propositional Proofs 

October 24, 2018, 3:00  4:00 pm at Logic Center, 2 Arrow St, Rm 420 
DIFFERENTIAL GEOMETRY SEMINAR 
Mark Stern (DUKE UNIVERSITY) 
Monotonicity and Betti Number Bounds 

October 23, 2018, 4:00 pm at Science Center 507 
MATHEMATICAL PICTURE LANGUAGE SEMINAR 
Shamil Shakirov (HARVARD UNIVERSITY) 
Rational integrable systems associated with higher genus surfaces 

October 23, 2018, 4:00 pm at Jefferson 356 
HARVARD/MIT ALGEBRAIC GEOMETRY SEMINAR 
Tim Magee (INSTITUTO DE MATHEMáTICAS, UNAM) 
Toric degenerations of cluster varieties 

October 23, 2018, 3:00 pm at Science Center 507 
CMSA TOPOLOGICAL ASPECTS OF CONDENSED MATTER SEMINAR 
YinChen He (PERIMETER INSTITUTE) 
Emergent QED3 and QCD3 in condensed matter system 

October 22, 2018, 10:00  11:30 am at CMSA Building, 20 Garden St, G02 
CMSA MATHEMATICAL PHYSICS SEMINAR 
Sze Ning Mak (Hazel) (BROWN UNIVERSITY) 
Tetrahedral geometry in holoraumy spaces of 4D, $\mathcal{N}=1$ and $\mathcal{N}=2$ minimal supermultiplets 

October 22, 2018, 12:00  1:00 pm at CMSA Building, 20 Garden St, G02 
STUDENT/POSTDOC SYMPLECTIC GEOMETRY SEMINAR 
YuWei Fan (HARVARD UNIVERSITY) 
Bridgeland stability conditions and mirror symmetry 

October 19, 2018, 2:00  3:15 pm at Science Center 507 
GAUGETOPOLOGYSYMPLECTIC SEMINAR 
Aleksander Doan (STONY BROOK UNIVERSITY) 
Harmonic Z/2 spinors and wallcrossing in SeibergWitten theory 

October 19, 2018, 3:30 pm at Science Center 507 
HARVARDMIT COMBINATORICS SEMINAR 
Bruno Benedetti (UNIVERSITY OF MIAMI) 
Local constructions of manifolds 

October 19, 2018, 4:15  5:15 pm at MIT 2147 
CMSA MIRROR SYMMETRY SEMINAR 
Jingyu Zhao (CMSA) 
Big quantum period theorem for the bulkdeformed potentials of toric surfaces 

October 19, 2018, 11:00 am  12:00 pm at Science Center 530 
THURSDAY SEMINAR 
Daniel ÁlvarezGavela (INSTITUTE FOR ADVANCED STUDY) 
SmaleHirsch inmersion theory via holonomic approximation 

October 18, 2018, 3:00 pm  5:00 pm at Science Center 507 
CMSA GENERAL RELATIVITY SEMINAR 
Sébastien Picard (HARVARD UNIVERSITY) 
The Anomaly flow over Riemann surfaces 

October 17, 2018, 11:00 am at CMSA Building, 20 Garden St, G02 
NUMBER THEORY SEMINAR 
Sean Howe (STANFORD UNIVERSITY) 
A unipotent circle action on padic modular forms 

October 17, 2018, 3:00 pm at Science Center 507 
CMSA COLLOQUIUM 
Jeremy England (MIT) 
Wisdom of the Jumble 

October 17, 2018, 4:30  5:30 pm at CMSA Building, 20 Garden St, G10 
JOINT DEPARTMENT OF MATHEMATICS AND CMSA RANDOM MATRIX AND PROBABILITY THEORY SEMINAR 
Thomas Chen (UNIVERSITY OF TEXAS AT AUSTIN) 
Dynamics of a heavy quantum tracer particle in a Bose gas 

October 17, 2018, 3:30  4:30 pm * please note change in time* at CMSA Building, 20 Garden St, G10 
INFORMAL GEOMETRY AND DYNAMICS SEMINAR 
Curtis McMullen (HARVARD UNIVERSITY) 
Ergodic theory of foliations of surfaces 

October 17, 2018, 4:00 pm at Science Center 530 
DIFFERENTIAL GEOMETRY SEMINAR 
Teng Fei (COLUMBIA UNIVERSITY) 
cscK metrics and the coupled flow of LiYuanZhang 

October 16, 2018, 4:00 pm at Science Center 507 
HARVARD/MIT ALGEBRAIC GEOMETRY SEMINAR 
Dori Bejleri (MIT) 
Compact moduli of elliptic fibrations and degree one del Pezzo surfaces 

October 16, 2018, 3:00 pm at MIT 2142 
MATHEMATICAL PICTURE LANGUAGE SEMINAR 
Christoph Gorgulla (HARVARD MEDICAL SCHOOL AND THE MATHEMATICAL PICTURE LANGUAGE PROJECT) 
A quantum mechanical free energy method based on Feynman's path integral formulation 

October 16, 2018, 4:00 pm at Jefferson 356 
CMSA SPECIAL SEMINAR 
Artan Sheshmani (CMSA) 
Atiyah class and sheaf counting on local CalabiYau four folds 

October 16, 2018, 2:30 pm at CMSA Building, 20 Garden St, G10 
CMSA SPECIAL SEMINAR 
Xin Wang (COLUMBIA UNIVERSITY) 
Quasimodularity and holomorphic anomaly equation for GW invariants of elliptic curve 

October 15, 2018, 3:00 pm at CMSA Building, 20 Garden St, G10 
LOGIC SEMINAR 
Will Boney (HARVARD UNIVERSITY) 
Erd`sRado Classes 

October 15, 2018, 5:40 pm at Science Center 507 
OPEN NEIGHBORHOOD SEMINAR 
Bena Tshishiku (HARVARD UNIVERSITY) 
The odd thing about can sunshades 

October 15, 2018, 4:30 pm at Science Center 507 
CMSA TOPOLOGICAL ASPECTS OF CONDENSED MATTER SEMINAR 
Ethan Lake (MIT) 
A primer on higher symmetries 

October 15, 2018, 10:00  11:30 am at CMSA Building, 20 Garden St, G10 
CMSA MATHEMATICAL PHYSICS SEMINAR 
Chris Gerig (HARVARD UNIVERSITY) 
A geometric interpretation of the SeibergWitten invariants 

October 15, 2018, 12:00  1:00 pm at CMSA Building, 20 Garden St, G10 
STUDENT/POSTDOC SYMPLECTIC GEOMETRY SEMINAR 
Yusuf Baris Kartal (MIT) 
Distinguishing open symplectic mapping tori via the dynamics of Fukaya categories 

October 12, 2018, 2:00  3:15 pm at Science Center 507 
GAUGETOPOLOGYSYMPLECTIC SEMINAR 
Paul Feehan (RUTGERS UNIVERSITY) 
Lojasiewicz inequalities and MorseBott functions 

October 12, 2018, 3:30 PM at Science Center 507 
THURSDAY SEMINAR 
Emily Saunders (HARVARD UNIVERSITY) 
The HirschSmale theorem 

October 11, 2018, 3:00 pm  5:00 pm at Science Center 507 
BRANDEIS  HARVARD  MIT  NORTHEASTERN JOINT COLLOQUIUM 
Zhiwei Yun (MIT) 
From Kloosterman sums to exceptional groups 

October 11, 2018, Tea at 4:00 pm, Talk at 4:30 pm at Brandeis  317 Goldsmith 
JOINT DEPARTMENT OF MATHEMATICS AND CMSA RANDOM MATRIX AND PROBABILITY THEORY SEMINAR 
Alfonso Bandeira (NEW YORK UNIVERSITY) 
Statistical estimation under group actions: The Sample Complexity of MultiReference Alignment 

October 10, 2018, 3:00  4:00 pm at CMSA Building, 20 Garden St, G10 
CMSA COLLOQUIUM 
Justin Solomon (MIT) 
Correspondence and Optimal Transport for Geometric Data Processing 

October 10, 2018, 4:30 pm at CMSA Building, 20 Garden St, G10 
INFORMAL GEOMETRY AND DYNAMICS SEMINAR 
Curtis McMullen (HARVARD UNIVERSITY) 
Ergodic theory of foliations of surfaces 

October 10, 2018, 4:00 pm at Science Center 530 
NUMBER THEORY SEMINAR 
Max Menzies (HARVARD UNIVERSITY) 
The pcurvature and Bost's Conjecture for the GaussManin connection on nonabelian cohomology 

October 10, 2018, 3:00 pm at Science Center 507 
CMSA GENERAL RELATIVITY SEMINAR 
Salem Al Mosleh (CMSA) 
Thin elastic shells and isometric embedding of surfaces in threedimensional Euclidean space 

October 10, 2018, 11:00 am at CMSA Building, 20 Garden St, G02 
HARVARD/MIT ALGEBRAIC GEOMETRY SEMINAR 
Ignacio Barros (NORTHEASTERN UNIVERSITY) 
Uniruledness of strata of holomorphic differentials in small genus 

October 09, 2018, 3:00 pm at Science Center 507 
MATHEMATICAL PICTURE LANGUAGE SEMINAR 
JeanBernard Zuber (SORBONNE UNIVERSITé) 
ADE and all that, 30 years after 

October 09, 2018, 4:00 pm at Jefferson 356 
DIFFERENTIAL GEOMETRY SEMINAR 
Semyon Alesker (TEL AVIV UNIVERSITY) 
Quaternionic MongeAmpere equations on HKT manifolds 

October 09, 2018, 4:00 pm at Science Center 507 
CMSA TOPOLOGICAL ASPECTS OF CONDENSED MATTER SEMINAR 
Sagar Vijay (HARVARD UNIVERSITY) 
Fracton Phases of Matter 

October 09, 2018, 3:00 PM  4:30 PM at CMSA Building, 20 Garden St, G10 
CMSA MATHEMATICAL PHYSICS SEMINAR 
PeiKen Hung (MIT) 
The linear stability of the Schwarzschild spacetime in the harmonic gauge: odd part 

October 08, 2018, 12:00  1:00 pm at CMSA Building, 20 Garden St, G10 
**CANCELED** STUDENT/POSTDOC SYMPLECTIC GEOMETRY SEMINAR 
YuWei Fan (HARVARD UNIVERSITY) 
**CANCELED**Bridgeland stability conditions and mirror symmetry 

October 05, 2018, 2:00  3:15 pm at Science Center 507 **CANCELED** 
MATHEMATICAL PICTURE LANGUAGE SEMINAR 
Semyon Dyatlov (UC BERKELEY AND MIT) 
Fractal Uncertainty Principle and Quantum Chaos 

October 05, 2018, 4:30 pm at Jefferson 453 
CMSA SPECIAL SEMINAR 
XiaoGang Wen (MIT) 
Classification of topological orders in 2+1D and 3+1D 

October 05, 2018, 11:00 am  12:00 pm at Science Center 530 
GAUGETOPOLOGYSYMPLECTIC SEMINAR 
Anar Akhmedov (UNIVERSITY OF MINNESOTA AND HARVARD UNIVERSITY) 
Construction of symplectic 4manifolds and Lefschetz fibrations via Luttinger surgery 

October 05, 2018, 3:30 pm at Science Center 507 
OPEN NEIGHBORHOOD SEMINAR 
Matt Parker (STANDUP MATHS AND QUEEN MARY UNIVERSITY OF LONDON) 
Standup Maths: using performance to engage people with mathematics 

October 04, 2018, 5:00 pm at Science Center 507 
THURSDAY SEMINAR 
Bena Tshishiku (HARVARD UNIVERSITY) 
Relations among StiefelWhitney classes of manifolds 

October 04, 2018, 3:00 pm  5:00 pm at Science Center 507 
BRANDEIS  HARVARD  MIT  NORTHEASTERN JOINT COLLOQUIUM 
Semyon Dyatlov (MIT) 
Fractal uncertainty principle and quantum chaos 

October 04, 2018, Tea at 4:00 pm, Talk at 4:30 pm at MIT 2190 
CMSA COLLOQUIUM 
Richard Schoen (UC IRVINE) 
Perspectives on the scalar curvature 

October 03, 2018, 4:30  5:30 pm at CMSA Building, 20 Garden St, G10 
NUMBER THEORY SEMINAR 
Lynnelle Ye (HARVARD UNIVERSITY) 
Geometry of eigenvarieties for definite unitary groups over the boundary of weight space 

October 03, 2018, 3:00 PM at Science Center 507 
CMSA GENERAL RELATIVITY SEMINAR 
Christos Mantoulidis (MIT) 
The Bartnik mass of apparent horizons 

October 03, 2018, 11:00 am at CMSA Building, 20 Garden St, G02 
JOINT DEPARTMENT OF MATHEMATICS AND CMSA RANDOM MATRIX AND PROBABILITY THEORY SEMINAR 
Ian Jauslin (INSTITUTE FOR ADVANCED STUDY) 
Liquid Crystals and the HeilmannLieb model 

October 03, 2018, 3:00 pm at CMSA Building, 20 Garden St, G10 
DIFFERENTIAL GEOMETRY SEMINAR 
Hansol Hong (CMSA & BRANDEIS UNIVERSITY) 
Mirror construction via Lagrangian deformation 

October 02, 2018, 4:00 pm at Science Center 507 
HARVARD/MIT ALGEBRAIC GEOMETRY SEMINAR 
Tom Bachmann (MIT) 
Affine Grassmannians in motivic homotopy theory 

October 02, 2018, 3:00 pm at MIT 22142 
MATHEMATICAL PICTURE LANGUAGE SEMINAR 
Victor Kac (MIT) 
Multiplicative Poisson vertex algebras and differentialdifference Hamiltonian equations 

October 02, 2018, 5:00 pm at Jefferson 356 
SPECIAL SEMINAR 
Andre Neves (UNIVERSITY OF CHICAGO) 
Abundance of minimal surfaces 

October 01, 2018, 3:00  4:00 pm at Science Center 507 
CMSA MATHEMATICAL PHYSICS SEMINAR 
Dori Bejleri (MIT) 
Stable pair compactifications of the moduli space of degree one del Pezzo surfaces via elliptic fibrations 

October 01, 2018, 12:00  1:00 pm at CMSA Building, 20 Garden St, G10 
STUDENT/POSTDOC SYMPLECTIC GEOMETRY SEMINAR 
Yoosik Kim (BOSTON UNIVERSITY) 
GelfandCetlin systems and their applications 

September 28, 2018, 2:00  3:15 pm at Science Center 507 
JOINT DEPARTMENT OF MATHEMATICS AND CMSA RANDOM MATRIX AND PROBABILITY THEORY SEMINAR 
Yash Deshpande (MIT) 
Estimating lowrank matrices in noise: phase transitions from spin glass theory 

September 28, 2018, 3:00 pm at CMSA Building, 20 Garden St, G10 
BRANDEIS  HARVARD  MIT  NORTHEASTERN JOINT COLLOQUIUM 
Peter Bubenik (UNIVERSITY OF FLORIDA) 
Mathematical Aspects of Topological Data Analysis 

September 27, 2018, 4:30 pm at Northeastern  509 Lake Hall 
THURSDAY SEMINAR 
Jun Hou Fung (HARVARD UNIVERSITY) 
Immersions up to cobordism 

September 27, 2018, 3:00 pm  5:00 pm at Science Center 507 
NUMBER THEORY SEMINAR 
Frank Thorne (UNIVERSITY OF SOUTH CAROLINA & TUFTS UNIVERSITY) 
Error Terms in Arithmetic Statistics 

September 26, 2018, 3:00 pm at Science Center 507 
CMSA COLLOQUIUM 
XiaoGang Wen (MIT) 
A classification of low dimensional topological orders and fully extended TQFTs 

September 26, 2018, 4:30  5:30 pm at CMSA Building, 20 Garden St, G10 
CMSA GENERAL RELATIVITY SEMINAR 
Jordan Keller (BHI) 
Quasilocal Angular Momentum and CenterofMass at Future Null Infinity 

September 26, 2018, 11 AM at CMSA Building, 20 Garden St., G02 
INFORMAL GEOMETRY AND DYNAMICS SEMINAR 
Curtis McMullen (HARVARD UNIVERSITY) 
Moduli spaces and dynamical systems 

September 26, 2018, 4:00 pm at Science Center 530 
DIFFERENTIAL GEOMETRY SEMINAR 
PeiKen Hung (MIT) 
The smoothing time of convex inverse mean curvature flows 

September 25, 2018, 4:00  5:00 pm at Science Center 507 
CMSA TOPOLOGICAL ASPECTS OF CONDENSED MATTER SEMINAR 
Max Metlitski (MIT) 
Surface Topological Order and a new 't Hooft Anomaly of Interaction Enabled 3+1D Fermion SPTs 

September 24, 2018, 10:00  11:30 am at CMSA Building, 20 Garden St, G10 
CMSA MATHEMATICAL PHYSICS SEMINAR 
Yi Xie (SIMONS CENTER) 
sl(3) Khovanov module and the detection of planar thetagraph 

September 24, 2018, 12:00  1:00 pm at CMSA Building, 20 Garden St, G10 
GAUGE  TOPOLOGY  SYMPLECTIC SEMINAR 
Weiyi Zhang (UNIVERSITY OF WARWICK) 
From smooth to almost complex 

September 21, 2018, 3:30 pm at Science Center 507 
STUDENT/POSTDOC SYMPLECTIC GEOMETRY SEMINAR 
Tim Large (MIT) 
Steenrod operations and the Floer homotopy type 

September 21, 2018, 2:00  3:15 pm at Science Center 507 
THURSDAY SEMINAR 
Mike Hopkins (HARVARD UNIVERSITY) 
The Immersion Conjecture, an overview 

September 20, 2018, 3:00 pm  5:00 pm at Science Center 507 
CMSA GENERAL RELATIVITY SEMINAR 
PeiKen Hung (MIT) 
The linear stability of the Schwarzschild spacetime in the harmonic gauge: odd part 

September 19, 2018, 11:00 am at Science Center 530 
NUMBER THEORY SEMINAR 
Ben Howard (BOSTON COLLEGE) 
Moduli spaces of shtukas and a higher derivative GrossKohnenZagier formula 

September 19, 2018, 3:00 pm at Science Center 507 
INFORMAL GEOMETRY AND DYNAMICS SEMINAR 
Curtis McMullen (HARVARD UNIVERSITY) 
Moduli spaces and dynamical systems 

September 19, 2018, 4:00 pm at Science Center 530 
MATHEMATICAL PICTURE LANGUAGE SEMINAR 
Liming Ge (CHINESE ACADEMY OF SCIENCE AND UNIVERSITY OF NEW HAMPSHIRE) 
On Multiplicative Fourier Transforms 

September 18, 2018, 4:00 pm at Jefferson 356 
DIFFERENTIAL GEOMETRY SEMINAR 
William Minicozzi (MIT) 
Dynamics near singularities in mean curvature flow 

September 18, 2018, 4:00 pm at Science Center 507 
HARVARD/MIT ALGEBRAIC GEOMETRY SEMINAR 
Austin Conner (TEXAS A&M UNIVERSITY) 
New approaches to upper bounds on the complexity of matrix multiplication 

September 18, 2018, 3:00 pm at MIT 4153 
CMSA TOPOLOGICAL ASPECTS OF CONDENSED MATTER SEMINAR 
Adrian Po (MIT) 
A modern solution to the old problem of symmetries in band theory 

September 17, 2018, 10:30 am  12:00 pm at CMSA Building, 20 Garden St, G10 
OPEN NEIGHBORHOOD SEMINAR 
Moon Duchin (TUFTS UNIVERSITY) 
Random Everything 

September 17, 2018, 4:30 pm at Science Center 507 
CMSA MATHEMATICAL PHYSICS SEMINAR 
Gaetan Borot (MAX PLANCK INSTITUTE) 
A generalization of Mirzakhani's identity, and geometric recursion 

September 17, 2018, 12:00  1:00 pm at CMSA Building, 20 Garden St, G10 
STUDENT/POSTDOC SYMPLECTIC GEOMETRY SEMINAR 
Andrew Hanlon (UC BERKELEY AND HARVARD) 
A new perspective on homological mirror symmetry for toric varieties 

September 14, 2018, 1:30  3:00 pm at Science Center 507 
GAUGE  TOPOLOGY  SYMPLECTIC SEMINAR 
Denis Auroux (HARVARD UNIVERSITY) 
An invitation to homological mirror symmetry 

September 14, 2018, 3:30 pm at Science Center 507 
CMSA GENERAL RELATIVITY SEMINAR 
Aghil Alaee (CMSA) 
Massangular momentum inequality for black holes 

September 12, 2018, 11:00 am at CMSA Building, 20 Garden St, G02 
INFORMAL GEOMETRY AND DYNAMICS SEMINAR 
Curtis McMullen (HARVARD UNIVERSITY) 
Moduli spaces and dynamical systems 

September 12, 2018, 4:00 pm at Science Center 530 
NUMBER THEORY SEMINAR 
Daniel Kriz (MIT) 
A new padic MaassShimura operator and supersingular RankinSelberg padic Lfunctions 

September 12, 2018, 3:00 pm at Science Center 507 
HARVARD/MIT ALGEBRAIC GEOMETRY SEMINAR 
Jack Huizenga (PENN STATE) 
Moduli of sheaves on Hirzebruch surfaces 

September 11, 2018, 3:00 pm at Science Center 507 
CMSA TOPOLOGICAL ASPECTS OF CONDENSED MATTER SEMINAR 
Dominic Else (MIT) 
Phases and topology in periodically driven (Floquet) systems 

September 10, 2018, 10:30 am  12:00 pm at CMSA Building, 20 Garden St, G10 
CMSA MATHEMATICAL PHYSICS SEMINAR 
Xiaomeng Xu (MIT) 
Stokes phenomenon, YangBaxter equations and GromovWitten theory 

September 10, 2018, 12:00  1:00 pm at CMSA Building, 20 Garden St, G10 
CMSA GENERAL RELATIVITY SEMINAR 
Christos Mantoulidis (MIT) 
Capacity and quasilocal mass 

September 07, 2018, 2:00 pm at CMSA Building, 20 Garden St, G02 
STUDENT/POSTDOC SYMPLECTIC GEOMETRY SEMINAR 
Denis Auroux (HARVARD UNIVERSITY) 
An introduction to Fukaya categories and homological mirror symmetry 

September 07, 2018, 1:30  3:00 pm at Science Center 530 
INFORMAL GEOMETRY AND DYNAMICS SEMINAR 
Curtis McMullen (HARVARD UNIVERSITY) 
Moduli spaces and dynamical systems 

September 05, 2018, 4:00 pm at Science Center 530 
MATHEMATICAL PICTURE LANGUAGE SEMINAR 
Bohan Fang (PEKING UNIVERSITY) 
Mirror symmetry for toric CalabiYau 3folds 

September 04, 2018, 4:00 pm at Jefferson 356 
CMSA SPECIAL SEMINAR 
Zhengcheng Gu (THE CHINESE UNIVERSITY OF HONG KONG) 
Towards a complete classification of symmetry protected topological phases for interacting fermions in three dimensions and a general group supercohomology theory 

August 29, 2018, 3:00 pm at CMSA Building, 20 Garden St, G10 
CENTER OF MATHEMATICAL SCIENCES AND APPLICATIONS SPECIAL ALGEBRAIC GEOMETRY SEMINAR 
Netanel RubinBlaier (CMSA, HARVARD) 
The Kontsevich compactification, AbelJacobi maps, and symplectomorphism of algebraic varieties 

May 24, 2018, 3:00  4:00 PM at CMSA Building, 20 Garden Street, Room G10 
CENTER OF MATHEMATICAL SCIENCES AND APPLICATIONS HOMOLOGICAL MIRROR SYMMETRY 2PART LECTURE SERIES 
Charles Doran (UNIVERSITY OF ALBERTA AND ICERM) 
CalabiYau fibrations: construction and classification 

May 17, 2018, 1:00  3:00 PM at CMSA Building, 20 Garden St, G10 
CENTER OF MATHEMATICAL SCIENCES AND APPLICATIONS HOMOLOGICAL MIRROR SYMMETRY 2PART LECTURE SERIES 
Charles Doran (UNIVERSITY OF ALBERTA AND ICERM) 
PicardFuchs uniformization and CalabiYau geometry 

May 15, 2018, 1:00  3:00 PM at CMSA Building, 20 Garden St, G10 
HARVARD/MIT ALGEBRAIC GEOMETRY SEMINAR 
Renzo Cavalieri (COLORADO STATE) 
Witten conjecture for Mumford's kappa classes 

May 08, 2018, 3:00 PM at Science Center 507 
DIFFERENTIAL GEOMETRY SEMINAR 
Netanel RubinBlaier (CMSA, HARVARD) 
The Kontsevich compactification, AbelJacobi maps, and symplectomorphism of algebraic varieties 

May 01, 2018, 4:15 PM at Science Center 507 
CENTER OF MATHEMATICAL SCIENCES AND APPLICATIONS MATHEMATICAL PHYSICS SEMINAR 
Dmitry Tonkong (UC BERKELEY) 
Geometry of symplectic flux 

April 30, 2018, 12:00  1:00 pm at CMSA Building, 20 Garden Street, Room G10 
CMSA SPECIAL SEMINAR ON SYMPLECTIC GEOMETRY 
Weiwei Wu (UNIVERSITY OF GEORGIA) 
Lagrangian surgery formulae and applications 

April 30, 2018, 1:30  2:30 pm at CMSA Building, 20 Garden Street, Room G10 
BRANDEIS, HARVARD, MIT, NORTHEASTERN JOINT COLLOQUIUM AT HARVARD 
Paul Hacking (UNIVERSITY OF MASSACHUSETTS, AMHERST) 
Mirror Symmetry and Fano manifolds 

April 26, 2018, Tea at 4 pm, Talk at 4:30 pm at Science Center Hall A 
NUMBER THEORY SEMINAR 
Ali Altug (BOSTON UNIVERSITY) 
Beyond endoscopy, the trace formula, and its relatives 

April 25, 2018, 3:00 PM at Science Center 507 
CENTER OF MATHEMATICAL SCIENCES AND APPLICATIONS COLLOQUIUM 
Xi Yin (HARVARD UNIVERSITY) 
How we can learn what we want to know about Mtheory 

April 25, 2018, 4:30 PM at CMSA Building, 20 Garden St, G10 
INFORMAL DYNAMICS & GEOMETRY SEMINAR 
Yongquan Zhang (HARVARD UNIVERSITY) 
Andreev's theorem on hyperbolic polyhedra and Kleinian reflection groups 

April 25, 2018, 4:00 pm at Science Center 530 
LOGIC SEMINAR 
Paul Baginski (FAIRFIELD UNIVERSITY) 
Model Theoretic Advances for Groups With Bounded Chains of Centralizers 

April 24, 2018, 5:15 PM at Science Center 507 
DIFFERENTIAL GEOMETRY SEMINAR 
Jiaping Wang (MINNESOTA) 
Structure at infinity for four dimensional shrinking Ricci Solitons 

April 24, 2018, 2:00  3:00 PM at Science Center 232 
HARVARD/MIT ALGEBRAIC GEOMETRY SEMINAR 
Melody Chan (BROWN UNIVERSITY) 
Cohomology of M_g and the tropical moduli space of curves 

April 24, 2018, 3:00 PM at Science Center 507 
CMSA MATHEMATICAL PHYSICS SEMINAR 
Baohua Fu (CHINESE ACADEMY OF SCIENCE) 
Equivariant compactifications of vector groups 

April 23, 2018, 12:00  1:00 PM at CMSA Building, 20 garden St., G02 
RANDOM MATRIX & PROBABILITY THEORY SEMINAR 
Yas Despande (MIT) 
Phase transitions in estimating lowrank matrices 

April 20, 2018, 3:00  4:00 pm at CMSA Building, 20 Garden St, G02 
CMSA MIRROR SYMMETRY SEMINAR 
Xiaomeng Xu (MIT) 
Stokes phenomenon, quantum groups and 2d topological field theory 

April 20, 2018, 9:30  10:45 AM at Sci Center 530 
RANDOM MATRIX & PROBABILITY THEORY SEMINAR 
Carl Lucibello (MIT) 
The Random Perceptron Problem: thresholds, phase transitions, and geometry 

April 20, 2018, 2:00  3:00 pm at CMSA Building, 20 Garden St, G02 
CMSA MIRROR SYMMETRY SEMINAR 
Alan Thompson (CAMBRIDGE) 
Threefolds fibred by K3 surfaces and mirror symmetry 

April 20, 2018, 10:45 AM  12:00 PM at Sci Center 530 
HARVARD LOGIC COLLOQUIUM 
Alekos Kechris (CALTECH) 
Borel equivalence relations, cardinal algebras, and structurability 

April 19, 2018, 4:00 " 5:00 PM at Logic Center, Room 420, 2 Arrow Street 
THURSDAY SEMINAR 
Jacob Lurie (HARVARD UNIVERSITY) 
Koszul Duality IV 

April 19, 2018, 3:00  5:00 pm at Science Center 507 
CMSA COLLOQUIUM 
Washington Taylor (MIT) 
On the fibration structure of known CalabiYau threefolds 

April 18, 2018, 4:30 PM at CMSA Building, 20 Garden St, G10 
INFORMAL GEOMETRY & DYNAMICS SEMINAR 
Kathryn Lindsey (BOSTON COLLEGE) 
Galois conjugates of PCF generalized betatransformations 

April 18, 2018, 4:00 PM at Sci Center 530 
NUMBER THEORY SEMINAR 
John Voight (DARTMOUTH COLLEGE) 
On the paramodularity of typical abelian surfaces 

April 18, 2018, 3:00 PM at Sci Center 507 
CENTER OF MATHEMATICAL SCIENCES AND APPLICATIONS SPECIAL ALGEBRAIC GEOMETRY SEMINAR 
Yefeng Shen (UNIVERSITY OF OREGON) 
LG/CY correspondence for Fermat elliptic curves 

April 17, 2018, 12:30  1:30 pm at CMSA Building, 20 Garden Street, G02 
HARVARD/MIT ALGEBRAIC GEOMETRY SEMINAR 
June Park (BROWN UNIVERSITY) 
Arithmetic of the moduli of quasimaps and the moduli of fibered algebraic surfaces with heuristics for counting curves over global fields 

April 17, 2018, 3:00 PM at MIT 4153 
CENTER OF MATHEMATICAL SCIENCES AND APPLICATIONS MATHEMATICAL PHYSICS SEMINAR 
Yuan Gao (STONY BROOK UNIVERSITY) 
On the extension of the Viterbo functor 

April 16, 2018, 12:00 PM at CMSA Building, 20 Garden Street, Room G10 
CENTER OF MATHEMATICAL SCIENCES AND APPLICATIONS MIRROR SYMMETRY SEMINAR 
Fabian Haiden (HARVARD UNIVERSITY) 
Geometric flows, iterated logarithms, and balanced weight filtrations 

April 13, 2018, 11:00am  12:00pm at Science Center 530 
CMSA HOMOLOGICAL MIRROR SYMMETRY FOCUSED LECTURE SERIES 
Mauricio Romo (INSTITUTE FOR ADVANCED STUDY) 
Gauged Linear Sigma Models, Supersymmetric Localization and Applications, Part 2 

April 12, 2018, 3:00  5:00 pm at CMSA Building, 20 Garden Street, G02 
HARVARD LOGIC COLLOQUIUM 
Boris Zilber (UNIVERSITY OF OXFORD) 
Between Model Theory and Physics 

April 12, 2018, 4:00  5:00 pm at Logic Center, 2 Arrow St, Rm 420 
INFORMAL GEOMETRY & DYAMICS SEMINAR 
Corey Bregman (BRANDEIS UNIVERSITY) 
Kaehler groups and surface bundles 

April 11, 2018, 4:00 PM at Science Center 530 
NUMBER THEORY SEMINAR 
Dino J. Lorenzini (UNIVERSITY OF GEORGIA) 
Regular models of curves and wild quotient singularities 

April 11, 2018, 3:00 PM at Science Center 507 
CENTER OF MATHEMATICAL SCIENCES AND APPLICATIONS 
Pablo Parillo (MIT) 
Graph Structure in Polynomial Systems: Chordal Networks 

April 11, 2018, 4:30 PM at CMSA building, 20 Garden St., G10 
HARVARD/MIT ALGEBRAIC GEOMETRY SEMINAR 
Eric Larson (MIT) 
The Maximal Rank Conjecture 

April 10, 2018, 3:00 PM at Science Center 507 
CMSA HOMOLOGICAL MIRROR SYMMETRY FOCUSED LECTURE SERIES 
Mauricio Romo (INSTITUTE FOR ADVANCED STUDY) 
Gauged Linear Sigma Models, Supersymmetric Localization and Applications, Part 1 

April 10, 2018, 3:00  5:00 pm at CMSA Building, 20 Garden Street, G02 
CENTER OF MATHEMATICAL SCIENCES AND APPLICATIONS MATHEMATICAL PHYSICS SEMINAR 
Brandon B. Meredith (EMBRYRIDDLE AERONAUTICAL UNIVERSITY) 
Mirror Symmetry on Toric Surfaces via Tropical Geometry 

April 09, 2018, 12:00 PM at CMSA Building, 20 Garden Street, G02 
THURSDAY SEMINAR 
Gijs Heuts (UTRECHT UNIVERSITY) 
Coalgebras and the Goodwillie tower of the BousfieldKuhn functor 

April 05, 2018, 3:00  5:00 pm at Science Center 507 
NUMBER THEORY SEMINAR 
Jennifer Balakrishnan (BOSTON UNIVERSITY) 
Effective aspects of quadratic Chabauty 

April 04, 2018, 3:00 PM at Science Center 507 
INFORMAL GEOMETRY & DYNAMICS SEMINAR 
Francis Bonahon (UNIVERSITY OF SOUTHERN CALIFORNIA) 
What to do when you cannot confine your planes? Teichmüller spaces of noncompact Riemann surfaces 

April 04, 2018, 4:00 pm at Science Center 530 
CENTER OF MATHEMATICAL SCIENCES AND APPLICATIONS COLLOQUIUM 
Ramesh Narayan (DEPARTMENT OF ASTRONOMY, HARVARD UNIVERSITY) 
Black Holes and Naked Singularities *Postponed from 3/21/18* 

April 04, 2018, 4:30 PM at CMSA Building, 20 Garden Street, Room G10 
LOGIC SEMINAR 
Warren Goldfarb () 
Two Notes on Weak Arithmetic 

April 03, 2018, 5:15 pm at Science Center 507 
HARVARD/MIT ALGEBRAIC GEOMETRY SEMINAR 
Curtis McMullen (HARVARD UNIVERSITY) 
Billiards, quadrilaterals and moduli spaces 

April 03, 2018, 3:00 PM at Science Center 507 
MATHEMATICAL PHYSICS SEMINAR 
Marcel Bischoff (OHIO UNIVERSITY) 
Quantum Symmetries and Conformal Nets 

April 03, 2018, 4:00 PM at Jefferson 356 
CENTER OF MATHEMATICAL SCIENCES AND APPLICATIONS MATHEMATICAL PHYSICS SEMINAR 
CheukYu Mak (UNIVERSITY OF CAMBRIDGE) 
Discrete Legendre transform and tropical multiplicity from symplectic geometry 

April 02, 2018, 12:00 PM at CMSA Building, 20 Garden Street, Room G10 
CENTER OF MATHEMATICAL SCIENCES AND APPLICATIONS MIRROR SYMMETRY SEMINAR 
YuWei Fan (HARVARD UNIVERSITY) 
Systoles, Special Lagrangians, and Bridgeland stability conditions 

March 30, 2018, 11:00  12:00 at Science Center 530 
SPECIAL DIFFERENTIAL GEOMETRY SEMINAR 
D.H. Phong (COLUMBIA UNIVERSITY) 
The Anomaly Flow and FuYau Hessian Equations 

March 30, 2018, 3:00  4:15 pm at Science Center 507 
CENTER OF MATHEMATICAL SCIENCES AND APPLICATIONS SPECIAL SEMINAR 
Zhiwei Zheng (TSINGHUA UNIVERSITY) 
Moduli Spaces of Cubic Fourfolds with Automorphisms 

March 30, 2018, 9:30  11:00 am at Science Center 530 
THURSDAY SEMINAR 
Jacob Lurie (HARVARD UNIVERSITY) 
Koszul Duality II 

March 29, 2018, 3:00  5:00 pm at Science Center 507 
NUMBER THEORY SEMINAR 
Chuck Doran (UNIVERSITY OF ALBERTA AND ICERM) 
Arithmetic MIrror Symmetry for K3 Pencils and Hypergeometric Decomposition 

March 28, 2018, 3:00 PM at Science Center 507 
CENTER OF MATHEMATICAL SCIENCES AND APPLICATIONS COLLOQUIUM 
Andrea Montanari (STANFORD UNIVERSITY) 
A Mean Field View of the Landscape of TwoLayers Neural Networks 

March 28, 2018, 4:30 PM at CMSA Building, 20 Garden Street, Room G10 
INFORMAL GEOMETRY & DYAMICS SEMINAR 
Curtis McMullen (HARVARD UNIVERSITY) 
Planes immersed in hyperbolic 3manifolds 

March 28, 2018, 4:00 PM at Science Center 530 
MATHEMATICAL PHYSICS SEMINAR 
Feng Xu (UNIVERSITY OF CALIFORNIA, RIVERSIDE) 
On Questions Around the Reconstruction Program 

March 27, 2018, 4:00 PM at Jefferson 356 
HARVARD/MIT ALGEBRAIC GEOMETRY SEMINAR 
Allen Knutson (CORNELL UNIVERSITY) 
Deformations of normal crossings 

March 27, 2018, 3:00 PM at Science Center 507 
LOGIC SEMINAR 
Marcos Mazari Armida (CARNEGIE MELLON UNIVERSITY) 
Nonforking wgood frames 

March 27, 2018, 5:15 pm at Science Center 507 
CENTER OF MATHEMATICAL SCIENCES AND APPLICATIONS MATHEMATICAL PHYSICS SEMINAR 
Yi Xie (SCGP) 
Surgery, Polygons and Instanton Floer homology 

March 26, 2018, 12:00 PM at CMSA Building, 20 Garden Street, G02 
MATHEMATICAL PHYSICS SEMINAR 
Wei Zhang (MIT) 
Superpositivity of Lfunctions and ‘completion of square’ 

March 23, 2018, 3:00 PM at Jefferson 250 
CMSA SPECIAL LECTURE SERIES ON QUANTUM COHOMOLOGY, NAKAJIMA VARETIES AND QUANTUM GROUPS 
Artan Sheshmani (QGM & CMSA) 
GW Invariants via Quantum Cohomology 

March 22, 2018, 1:00  3:00 pm at CMSA Building, 20 Garden Street, Room G10 
THURSDAY SEMINAR 
Jacob Lurie (HARVARD UNIVERSITY) 
Koszul Duality 

March 22, 2018, 3:00  5:00 pm at Science Center 507 
HARVARD LOGIC COLLOQUIUM 
Donald Martin (UCLA) 
Cantor's Grundlagen 

March 22, 2018, 4:00  5:00 pm at Logic Center, 2 Arrow St, Rm 420 
NUMBER THEORY SEMINAR 
Ananth Shankar (MIT) 
Exceptional splitting of reductions of abelian surfaces 

March 21, 2018, 3:00 pm at Science Center 507 
CENTER OF MATHEMATICAL SCIENCES AND APPLICATIONS COLLOQUIUM 
Ramesh Narayan (DEPARTMENT OF ASTRONOMY, HARVARD UNIVERSITY) 
Black Holes and Naked Singularities 

March 21, 2018, 4:30 PM at CMSA Building, 20 Garden Street, Room G10 
INFORMAL DYNAMICS & GEOMETRY SEMINAR 
Kenneth Bromberg (UNIVERSITY OF UTAH) 
Bounds on renormalized volume and the volume of the convex core 

March 21, 2018, 4:00 pm at Science Center 530 
CMSA SPECIAL LECTURE SERIES ON QUANTUM COHOMOLOGY, NAKAJIMA VARETIES AND QUANTUM GROUPS 
Artan Sheshmani (QGM & CMSA) 
GW Invariants via Quantum Cohomology 

March 20, 2018, 1:00  3:00 pm at CMSA Building, 20 Garden Street, Room G10 
HARVARD/MIT ALGEBRAIC GEOMETRY SEMINAR 
Tathagata Basak (IOWA STATE) 
A complex ball quotient and the monster 

March 20, 2018, 3:00 PM at MIT 4153 
MATHEMATICAL PHYSICS SEMINAR 
Jurg Frolich (ETH ZüRICH) 
Physics in 2D"from KosterlitzThouless Transition to Topological Insulators 

March 20, 2018, 4:00 PM at Jefferson 356 
DIFFERENTIAL GEOMETRY SEMINAR 
Tamás Darvas (UNIVERSITY OF MARYLAND) 
Complex MongeAmpere equations with prescribed singularity 

March 20, 2018, 3:45 pm **change in time** at Science Center 507 
CENTER OF MATHEMATICAL SCIENCES AND APPLICATIONS MATHEMATICAL PHYSICS SEMINAR 
Emanuel Scheidegger (ALBERT LUDWIGS UNIVERSITY OF FREIBURG) 
From Gauged Linear Sigma Models to LandauGinzburg orbifolds via central charge functions 

March 19, 2018, 12:00 PM at CMSA Building, 20 Garden Street, G02 
CMSA HOMOLOGICAL MIRROR SYMMETRY FOCUSED LECTURE SERIES 
Dmytro Shklyarov (TECHNISCHE UNIVERSITäT CHEMNITZ) 
On categories of matrix factorizations and their homological invariants 

March 15, 2018, 3:00  4:00 PM at CMSA Building, 20 Garden Street, Room G10 
CMSA SPECIAL LECTURE SERIES ON QUANTUM COHOMOLOGY, NAKAJIMA VARETIES AND QUANTUM GROUPS 
Artan Sheshmani (QGM & CMSA) 
Quantum Cohomology 

March 15, 2018, 1:00  3:00 pm at CMSA Building, 20 Garden Street, Room G10 
HARVARD/MIT ALGEBRAIC GEOMETRY SEMINAR 
Ariyan Javanpeykar (JOHANNES GUTENBERG UNIVERSITY MAINZ) 
Arithmetic, algebraic, and analytic hyperbolicity 

March 13, 2018, 3:00 PM at MIT 4153 
CMSA SPECIAL LECTURE SERIES ON QUANTUM COHOMOLOGY, NAKAJIMA VARETIES AND QUANTUM GROUPS 
Artan Sheshmani (QGM & CMSA) 
Quantum Cohomology 

March 13, 2018, 1:00  3:00 pm at CMSA Building, 20 Garden Street, Room G10 
CMSA HOMOLOGICAL MIRROR SYMMETRY FOCUSED LECTURE SERIES 
Dmytro Shklyarov (TECHNISCHE UNIVERSITäT CHEMNITZ) 
On categories of matrix factorizations and their homological invariants 

March 13, 2018, 3:00  4:00 PM at CMSA Building, 20 Garden Street, Room G10 
CENTER OF MATHEMATICAL SCIENCES AND APPLICATIONS MIRROR SYMMETRY SEMINAR 
Guangbo Xu (PRINCETON UNIVERSITY) 
Open quantum Kirwan map 

March 09, 2018, 9:30  11:00 am at Science Center 530 
CENTER OF MATHEMATICAL SCIENCES AND APPLICATIONS MIRROR SYMMETRY SEMINAR 
Shinobu Hosono (GAKUSHUIN UNIVERSITY) 
Gluing monodromy nilpotent cones of a family of K3 surfaces 

March 09, 2018, 11:00  12:00 at Science Center 530 
CMSA SPECIAL LECTURE SERIES ON QUANTUM COHOMOLOGY, NAKAJIMA VARETIES AND QUANTUM GROUPS 
Artan Sheshmani (QGM & CMSA) 
Quantum Cohomology 

March 08, 2018, 1:00  3:00 pm at CMSA Building, 20 Garden Street, Room G10 
CMSA HOMOLOGICAL MIRROR SYMMETRY FOCUSED LECTURE SERIES 
Dmytro Shklyarov (TECHNISCHE UNIVERSITäT CHEMNITZ) 
On categories of matrix factorizations and their homological invariants 

March 08, 2018, 3:00  4:00 PM at CMSA Building, 20 Garden Street, Room G10 
HARVARD LOGIC COLLOQUIUM 
Dima Sinapova (UNIVERSITY OF ILLINOIS AT CHICAGO) 
Stronger tree properties and the SCH 

March 08, 2018, 4:00  5:00 pm at Logic Center, 2 Arrow St, Rm 420 
THURSDAY SEMINAR 
Sander Kupers (HARVARD UNIVERSITY) 
The work of AroneDwyer 

March 08, 2018, 3:00  5:00 pm at Science Center 507 
CMSA HOMOLOGICAL MIRROR SYMMETRY FOCUSED LECTURE SERIES 
Adam Jacob (UC DAVIS) 
The deformed HermitianYangMills equation (continued) 

March 08, 2018, 4:005:00 pm at CMSA Building, 20 Garden St., G10 
INFORMAL GEOMETRY & DYAMICS SEMINAR 
Jesse Wolfson & Benson Farb (UC IRVINE & UNIVERSITY OF CHICAGO) 
The geometry of Hilbert's 13th problem 

March 07, 2018, 4:00 PM at Science Center 530 
CENTER OF MATHEMATICAL SCIENCES AND APPLICATIONS COLLOQUIUM 
Richard Kenyon (BROWN UNIVERSITY) 
Harmonic functions and the chromatic polynomial 

March 07, 2018, 4:30 PM at CMSA Building, 20 Garden Street, Room G10 
NUMBER THEORY SEMINAR 
Jesse Wolfson (UNIVERSITY OF CALIFORNIA, IRVINE) 
The theory of resolvent degree, after Hamilton, Klein, Hilbert, and Brauer 

March 07, 2018, 3:00 PM at Science Center 507 * please also note the talk at the Informal Geometry & Dynamics Seminar* 
CMSA HOMOLOGICAL MIRROR SYMMETRY FOCUSED LECTURE SERIES 
Dmytro Shklyarov (TECHNISCHE UNIVERSITäT CHEMNITZ) 
On categories of matrix factorizations and their homological invariants 

March 06, 2018, 3:00  4:00 PM at CMSA Building, 20 Garden Street, Room G10 
CENTER OF MATHEMATICAL SCIENCES AND APPLICATIONS HOMOLOGICAL MIRROR SYMMETRY 
Adam Jacob (UC DAVIS) 
The deformed HermitianYangMills equation 

March 06, 2018, 4:00  5:00 pm at CMSA Building, 20 Garden St., G10 
HARVARD/MIT ALGEBRAIC GEOMETRY SEMINAR 
Michael Kemeny (STANFORD UNIVERSITY) 
Betti numbers of the canonical ring of a curve 

March 06, 2018, 3:00 PM at MIT 4153 
CMSA SPECIAL LECTURE SERIES ON QUANTUM COHOMOLOGY, NAKAJIMA VARETIES AND QUANTUM GROUPS 
Artan Sheshmani (QGM & CMSA) 
Quantum Cohomology 

March 06, 2018, 1:00  3:00 pm at CMSA Building, 20 Garden Street, Room G10 
CMSA SPECIAL MATHEMATICAL PHYSICS SEMINAR 
Emanuel Scheidegger (ALBERT LUDWIGS UNIVERSITY OF FREIBURG) 
Periods and quasiperiods of modular forms and the mirror quintic at the conifold 

March 05, 2018, 11:00  12:00 at CMSA Building, 20 Garden Street, Room G10 
CENTER OF MATHEMATICAL SCIENCES AND APPLICATIONS MATHEMATICAL PHYSICS SEMINAR 
Shinobu Hosono (GAKUSHUIN UNIVERSITY) 
Movable vs monodromy nilpotent cones of CalabiYau manifolds 

March 05, 2018, 12:00 PM at CMSA Building, 20 Garden Street, Room G10 
CENTER OF MATHEMATICAL SCIENCES AND APPLICATIONS MIRROR SYMMETRY SEMINAR 
Chuck Doran (UNIVERSITY OF ALBERTA AND ICERM) 
Mirror Symmetry for Lattice Polarized del Pezzo Surfaces 

March 02, 2018, 11:00  12:00 at Science Center 530 
CMSA SPECIAL LECTURE SERIES ON QUANTUM COHOMOLOGY, NAKAJIMA VARETIES AND QUANTUM GROUPS 
Artan Sheshmani (QGM & CMSA) 
Quantum Cohomology 

March 01, 2018, 1:00  3:00 pm at CMSA Building, 20 Garden Street, Room G10 
THURSDAY SEMINAR 
Mike Hopkins (HARVARD UNIVERSITY) 
Background for the work of AroneDwyer 

March 01, 2018, 3:00  5:00 pm at Science Center 507 
CENTER OF MATHEMATICAL SCIENCES AND APPLICATIONS HOMOLOGICAL MIRROR SYMMETRY FOCUSED LECTURE SERIES 
Colin Diemer (IHES) 
Moduli spaces of LandauGinzburg models and (mostly Fano) HMS 

March 01, 2018, 3:00  5:00 pm at CMSA Building, 20 Garden Street, Room G10 
INFORMAL GEOMETRY & DYNAMICS SEMINAR 
Richard Schwartz (BROWN UNIVERSITY) 
5 points on the sphere 

February 28, 2018, 4:00 PM at Science Center 530 
DIFFERENTIAL GEOMETRY SEMINAR 
YuShen Lin (COLUMBIA UNIVERSITY) 
Tropical/Holomorphic Correspondence for HyperK\ 

February 28, 2018, 4:15 PM at Science Center 232 
NUMBER THEORY SEMINAR 
Wei Zhang (MIT) 
Special cycles on simple Shimura varieties 

February 28, 2018, 3:00 PM at Sci Center 507 
CMSA SPECIAL LECTURE SERIES ON QUANTUM COHOMOLOGY, NAKAJIMA VARETIES AND QUANTUM GROUPS 
Artan Sheshmani (QGM & CMSA) 
Quantum Cohomology 

February 27, 2018, 1:00  3:00 pm at CMSA Building, 20 Garden Street, Room G10 
MATHEMATICAL PHYSICS SEMINAR 
Hans Wenzl (UNIVERSITY OF CALIFORNIA, SAN DIEGO) 
Coideal Algebras and Subfactors 

February 27, 2018, 4:00 PM at Jefferson 356 
CMSA HOMOLOGICAL MIRROR SYMMETRY FOCUSED LECTURE SERIES 
Colin Diemer (IHES) 
Moduli spaces of LandauGinzburg models and (mostly Fano) HMS 

February 27, 2018, 3:00  4:00 PM at CMSA Building, 20 Garden Street, Room G10 
LOGIC SEMINAR 
Alexander Van Abel (CITY UNIVERSITY OF NEW YORK) 
The FefermanVaught Theorem and the Product of All Prime Finite Fields 

February 27, 2018, 5:15 pm at Science Center 507 
HARVARD/MIT ALGEBRAIC GEOMETRY SEMINAR 
Nick Salter (HARVARD UNIVERSITY) 
Vanishing cycles for linear systems on toric surfaces 

February 27, 2018, 3:00 PM at Science Center 507 
CENTER OF MATHEMATICAL SCIENCES AND APPLICATIONS MATHEMATICAL PHYSICS SEMINAR 
Jordan Keller (BHI) 
Linear Stability of Schwarzschild Black Holes 

February 26, 2018, 12:00 PM at CMSA Building, 20 Garden Street, Room G10 
CENTER OF MATHEMATICAL SCIENCES AND APPLICATIONS COLLOQUIUM 
Tom Hou (CALIFORNIA INSTITUTE OF TECHNOLOGY) 
Computerassisted analysis of singularity formation of a regularized 3D Euler equation 

February 26, 2018, 4:30 PM at CMSA Building, 20 Garden Street, Room G10 
JOINT DEPARTMENT OF MATHEMATICS AND CMSA RANDOM MATRIX AND PROBABILITY THEORY SEMINAR 
Mustazee Rahman (MIT) 
On shocks in the TASEP 

February 23, 2018, 3:30 pm at CMSA Building, 20 Garden Street, G02 
MATHEMATICAL PHYSICS SEMINAR 
Xinqi Gong (INSTITUTE FOR MATHEMATICAL SCIENCES, RENNIN UNIVERSITY OF CHINA) 
Mathematical Intelligence Applications in Biomedical Problems 

February 23, 2018, 3:00 pm at Jefferson 250 
CENTER OF MATHEMATICAL SCIENCES AND APPLICATIONS MIRROR SYMMETRY SEMINAR 
Jingyu Zhao (BRANDEIS & HARVARD) 
Connection on S^1equivariant Floer theory 

February 23, 2018, 11:00 am at Science Center 530 
THURSDAY SEMINAR 
Jeremy Hahn (HARVARD UNIVERSITY) 
Chromatic convergence of the Goodwillie tower on spheres 

February 22, 2018, 3:00  5:00 pm at Science Center 507 
CMSA SPECIAL LECTURE SERIES ON QUANTUM COHOMOLOGY, NAKAJIMA VARETIES AND QUANTUM GROUPS 
Artan Sheshmani (QGM & CMSA) 
Computing GW Invariants 

February 22, 2018, 1:00  3:00 pm at CMSA Building, 20 Garden Street, Room G10 
NUMBER THEORY SEMINAR 
Juan RiveraLetelier (UNIVERSITY OF ROCHESTER) 
Hecke and Linnik 

February 21, 2018, 3:00 PM at Science Center 507 
CENTER OF MATHEMATICAL SCIENCES AND APPLICATIONS COLLOQUIUM 
Don Rubin (HARVARD STATISTICS) 
Essential concepts of causal inference " a remarkable history 

February 21, 2018, 4:30 PM at CMSA Building, 20 Garden Street, Room G10 
INFORMAL DYNAMICS & GEOMETRY SEMINAR 
Ian Biringer (BOSTON COLLEGE) 
Convex cores of thick hyperbolic 3manifolds with bounded rank 

February 21, 2018, 4:00 PM at Science Center 530 
CMSA SPECIAL LECTURE SERIES ON QUANTUM COHOMOLOGY, NAKAJIMA VARETIES AND QUANTUM GROUPS 
Artan Sheshmani (QGM & CMSA) 
Computing GW Invariants 

February 20, 2018, 1:00  3:00 pm at CMSA Building, 20 Garden Street, Room G10 
LOGIC SEMINAR 
Andrew BrookeTaylor (UNIVERSITY OF LEEDS) 
Products of CW complexes: the full story 

February 20, 2018, 5:15 pm at Science Center 507 
CENTER OF MATHEMATICAL SCIENCES AND APPLICATIONS SPECIAL SEMINAR 
Jens Hoppe (KTH) 
New Constructions and Quantization of Minimal Surfaces 

February 16, 2018, 9:30 am at Science Center 530 
CENTER OF MATHEMATICAL SCIENCES AND APPLICATIONS MIRROR SYMMETRY SEMINAR 
ManWai Cheung (HARVARD UNIVERSITY) 
Quiver representations and theta functions 

February 16, 2018, 11:00 am at Science Center 530 
JOINT DEPARTMENT OF MATHEMATICS AND CMSA RANDOM MATRIX AND PROBABILITY THEORY SEMINAR 
Reza Gheissari (NEW YORK UNIVERSITY) 
Dynamics of Critical 2D Potts Models 

February 16, 2018, 3:30 pm at CMSA Building, 20 Garden Street, G02 
CMSA SPECIAL LECTURE SERIES ON QUANTUM COHOMOLOGY, NAKAJIMA VARETIES AND QUANTUM GROUPS 
Artan Sheshmani (QGM & CMSA) 
Computing GW Invariants 

February 15, 2018, 1:00  3:00 pm at CMSA Building, 20 Garden Street, Room G10 
CENTER OF MATHEMATICAL SCIENCES AND APPLICATIONS COLLOQUIUM 
Zhengwei Liu (HARVARD PHYSICS) 
A new program on quantum subgroups 

February 14, 2018, 4:30 PM at CMSA Building, 20 Garden Street, Room G10 
INFORMAL DYNAMICS & GEOMETRY SEMINAR 
Simion Filip (HARVARD UNIVERSITY) 
Hypergeometric equations and Lyapunov exponents (via Hodge theory) 

February 14, 2018, 4:00 PM at Science Center 530 
NUMBER THEORY SEMINAR 
Hansheng Diao (PRINCETON UNIVERSITY) 
Towards a $p$adic RiemannHilbert correspondence 

February 14, 2018, 3:00 PM at Science Center 507 
MATHEMATICAL PHYSICS SEMINAR 
Nicholas Early (UNIVERSITY OF MINNESOTA) 
Canonical Bases for Permutohedral Plates 

February 13, 2018, 4:00 PM at Jefferson 356 
CMSA SPECIAL LECTURE SERIES ON QUANTUM COHOMOLOGY, NAKAJIMA VARETIES AND QUANTUM GROUPS 
Artan Sheshmani (QGM & CMSA) 
GromovWitten invariants 

February 13, 2018, 1:00  3:00 pm at CMSA Building, 20 Garden Street, Room G10 
HARVARD/MIT ALGEBRAIC GEOMETRY SEMINAR 
Jesse Kass (UNIVERSITY OF SOUTH CAROLINA) 
How to count lines on a cubic surface arithmetically 

February 13, 2018, 3:00 PM at Science Center 507 
CENTER OF MATHEMATICAL SCIENCES AND APPLICATIONS MATHEMATICAL PHYSICS SEMINAR 
Matthew Stroffregen (MIT) 
Equivariant Khovanov Spaces 

February 12, 2018, 12:00 PM at CMSA Building, 20 Garden Street, Room G10 
LOGIC SEMINAR 
Alice Medvedev () 
Unions of chains of signatures 

February 12, 2018, 5:15 pm at Science Center 507 
CENTER OF MATHEMATICAL SCIENCES AND APPLICATIONS MIRROR SYMMETRY SEMINAR 
Dan Xie (CMSA, HARVARD) 
Three dimensional mirror symmetry 

February 09, 2018, 11:00  12:00 at Science Center 530 
THURSDAY SEMINAR 
Ben Knudsen (HARVARD UNIVERSITY) 
The derivatives of the identity functor 

February 08, 2018, 3:00  5:00 pm at Science Center 507 
CENTER OF MATHEMATICAL SCIENCES AND APPLICATIONS COLLOQUIUM 
Fan Chung (UNIVERSITY OF CALIFORNIA, SAN DIEGO) 
Sequences: random, structured or something in between 

February 08, 2018, 5:00 pm at CMSA Building, 20 Garden Street, Room G10 
NUMBER THEORY SEMINAR 
Alex Kontorovich (RUTGERS AND IAS) 
Sphere Packings and Arithmetic 

February 07, 2018, 3:00 PM at Science Center 507 
INFORMAL DYNAMICS & GEOMETRY SEMINAR 
Phil Engel (HARVARD UNIVERSITY) 
Penrose Tilings of Riemann Surfaces 

February 07, 2018, 4:00 PM at Science Center 530 
LOGIC SEMINAR 
Jesse Han (MCMASTER UNIVERSITY) 
Strong conceptual completeness for \omegacategorical theories 

February 06, 2018, 5:15 pm at Science Center 507 
MATHEMATICAL PHYSICS SEMINAR 
Jacob Shapiro (ETH ZüRICH) 
BulkEdge Duality and Complete Localization for Disordered Chiral Chains 

February 06, 2018, 4:00 PM at Jefferson 356 
HARVARD/MIT ALGEBRAIC GEOMETRY SEMINAR 
Bhargav Bhatt (UNIVERSITY OF MICHIGAN) 
Prisms and deformations of de Rham cohomology 

February 06, 2018, 3:00 PM at MIT  4153 
CENTER OF MATHEMATICAL SCIENCES AND APPLICATIONS HOMOLOGICAL MIRROR SYMMETRY FOCUSED LECTURE SERIES 
Ivan Losev (NORTHEASTERN UNIVERSITY) 
BGG category O: towards symplectic duality 

February 06, 2018, 3:00 PM at CMSA Building, 20 Garden Street, G02 
DIFFERENTIAL GEOMETRY SEMINAR 
Linyuan Lu (UNIVERSITY OF SOUTH CAROLINA) 
Ricciflat graphs with girth at leave five 

February 06, 2018, 4:30 PM at Science Center 530 
CENTER OF MATHEMATICAL SCIENCES AND APPLICATIONS MATHEMATICAL PHYSICS SEMINAR 
Hyungchul Kim (CMSA & HARVARD PHYSICS) 
Seiberg duality and superconformal index in 3d 

February 05, 2018, 12:00 PM at CMSA Building, 20 Garden Street, G02 
MATHEMATICAL PHYSICS SEMINAR 
Yunxiang Ren (TENNESSEE STATE UNIVERSITY) 
A New Skein Theory for OneWay YangBaxter Planar Algebras 

February 02, 2018, 4:00 PM at Jefferson 250 
CENTER OF MATHEMATICAL SCIENCES AND APPLICATIONS MIRROR SYMMETRY SEMINAR 
Minxian Zhu (YAU MATHEMATICAL SCIENCES CENTER, TSINGHUA UNIVERSITY) 
The hyperplane conjecture for periods of CalabiYau hypersurfaces in P^n 

February 02, 2018, 11:00 am at Science Center 530 
THURSDAY SEMINAR 
Jacob Lurie (HARVARD UNIVERSITY) 
Overview 

February 01, 2018, 3:00  5:00 pm at Science Center 507 
NUMBER THEORY SEMINAR 
Chen Wan (INSTITUTE FOR ADVANCED STUDY) 
The local trace formula for the GinzburgRallis model and the generalized Shalika model 

January 31, 2018, 3:00  4:00 PM at Science Center 507 
INFORMAL DYNAMICS & GEOMETRY SEMINAR 
Curtis McMullen (HARVARD UNIVERSITY) 
The behavior of planes in confinement 

January 31, 2018, 4:00 PM at Science Center 530 
DIFFERENTIAL GEOMETRY SEMINAR 
Valentino Tosatti (NORTHWESTERN UNIVERSITY) 
Estimates for collapsing CalabiYau metrics 

January 30, 2018, 4:15 PM at Science Center 507 
MATHEMATICAL PHYSICS SEMINAR 
Kaifung Bu (HARVARD UNIVERSITY) 
De Finetti Theorems for Braiding Parafermions 

January 30, 2018, 4:00 PM at Jefferson 356 
LOGIC SEMINAR 
Rehana Patel () 
Stable regularity for finite relational structures 

January 30, 2018, 5:15  6:15 pm at Science Center 507 
CENTER OF MATHEMATICAL SCIENCES AND APPLICATIONS SPECIAL SEMINAR 
Cumrun Vafa (HARVARD PHYSICS) 
All genus GromovWitten invariants for Compact CalabiYau threefolds 

January 30, 2018, 1  2:30 pm at CMSA Building, 20 Garden Street, Room G10 
CENTER OF MATHEMATICAL SCIENCES AND APPLICATIONS MATHEMATICAL PHYSICS SEMINAR 
Qiang Wen (YAU MATHEMATICAL SCIENCES CENTER, TSINGHUA UNIVERSITY) 
Holographic entanglement entropy in general spacetimes 

January 29, 2018, 12:00  1:00 pm at CMSA Building, 20 Garden Street, Room G10 
CENTER OF MATHEMATICAL SCIENCES AND APPLICATIONS MIRROR SYMMETRY SEMINAR 
Matthew Young (CHINESE UNIVERISTY OF HONG KONG) 
Algebra and geometry of orientifold DonaldsonThomas theory 

January 26, 2018, 11:0012:00pm at Science Center 530 
CMSA SPECIAL SEMESTERLONG LECTURE SERIES 
Artan Sheshmani (QGM/CMSA) 
Quantum Cohomology, Nakajima Varieties and Quantum groups 

January 25, 2018, 1:00  3:00pm at CMSA Building, 20 Garden St., G10 
HARVARD LOGIC COLLOQUIUM 
Aki Kanamori (BOSTON UNIVERSITY) 
AspectPerception and the History of Mathematics 

January 25, 2018, 4:005:00 PM at Logic Center, Room 420, 2 Arrow St 
CMSA HOMOLOGICAL MIRROR SYMMETRY FOCUSED LECTURE SERIES 
Ivan Losev (NORTHEASTERN UNIVERSITY) 
BGG category O: towards symplectic duality 

January 25, 2018, 3:00  5:00pm at CMSA Building, 20 Garden St., G10 
MATHEMATICAL PHYSICS SEMINAR 
Bin Gui (VANDERBILT UNIVERSITY) 
A Unitary Tensor Product Theory for Unitary Vertex Operator Algebra Modules 

January 23, 2018, 4:00 PM at Jefferson 356 
CMSA SPESIAL SEMINAR 
Shannon Ray (FLORIDA ATLANTIC UNIVERSITY) 
Wang and Yau’s QuasiLocal Energy for an Extreme Kerr Spacetime 

January 19, 2018, 4:00pm at CMSA Building, 20 Garden St., G10 
MATHEMATICAL PHYSICS SEMINAR 
Marco De Renzi (UNIVERSITY OF PARIS 7) 
Renormalized Hennings Invariants and TQFTs 

January 16, 2018, 4:00 PM at Jefferson 356 
HARVARD/MIT ALGEBRAIC GEOMETRY SEMINAR 
Marco Gualtieri (UNIVERSITY OF TORONTO) 
Holomorphic symplectic Morita equivalence and the generalized Kaehler potential 

December 12, 2017, 3:00 pm at Science Center Hall A 
DIFFERENTIAL GEOMETRY SEMINAR 
Eveline Legendre (INSTITUT DE MATHéMATIQUES DE TOULOUSE, UNIVERSITé PAUL SABATIER) 
An application of the equivariant localization formula in Sasaki geometry 

December 06, 2017, 4:15 PM at Science Center 507 
JOINT DEPARTMENT OF MATHEMATICS AND CMSA RANDOM MATRIX AND PROBABILITY THEORY SEMINAR 
Ankur Moitra (MIT) 
A New Approach to Approximate Counting and Sampling 

December 06, 2017, 3:00  4:00 pm at CMSA Building, 20 Garden Street, Room G10 
JOINT DEPARTMENT OF MATHEMATICS AND CMSA RANDOM MATRIX AND PROBABILITY THEORY SEMINAR 
Phillipe Rigollet (MIT) 
Exact recovery in the Ising blockmodel 

December 06, 2017, 2:00  3:00 PM at CMSA Building, 20 Garden Street, Room G10 
CENTER OF MATHEMATICAL SCIENCES AND APPLICATIONS MATHEMATICAL PHYSICS SEMINAR 
Sara Venkatesh (COLUMBIA UNIVERSITY) 
Closedstring mirror symmetry for subdomains 

December 06, 2017, 12:00 PM at CMSA Building, 20 Garden Street, Room G10 
NUMBER THEORY SEMINAR 
Robert Lemke Oliver (TUFTS UNIVERSITY) 
TateShafarevich groups in quadatric twist families 

December 06, 2017, 3:15 pm *sharp at Science Center 507 
THURSDAY SEMINAR 
Jacob Lurie (HARVARD UNIVERSITY) 
Comparison of Stable and Unstable v_nPeriodic Homotopy 

November 30, 2017, 4:00  6:00 PM at Science Center 507 
CENTER OF MATHEMATICAL SCIENCES AND APPLICATIONS MATHEMATICAL PHYSICS SEMINAR 
Amitai Zernik (INSTITUTE FOR ADVANCED STUDY) 
Computing the A∞ algebra of RP^2m ↪ CP^2m using open fixedpoint localization 

November 29, 2017, 12:00 PM at CMSA Building, 20 Garden Street, Room G10 
NUMBER THEORY SEMINAR 
Renee Bell (MIT) 
LocaltoGlobal Lifting for Curves in Characteristic p 

November 29, 2017, 3:15 pm *sharp at Science Center 507 
JOINT DEPARTMENT OF MATHEMATICS AND CMSA RANDOM MATRIX AND PROBABILITY THEORY SEMINAR 
David Gamarink (MIT) 
(Arguably) Hard on Average Constraint Satisfaction Problems 

November 29, 2017, 3:00 PM at CMSA Building, 20 Garden Street, Room G10 
INFORMAL DYNAMICS & GEOMETRY SEMINAR 
Jane Wang (MIT) 
Finitely many algebraically primitive Teichmüller curves in genus g at least 3 

November 29, 2017, 4:00 PM at Science Center 530 
DIFFERENTIAL GEOMETRY SEMINAR 
Gabor Szekelyhidi (UNIVERSITY OF NOTRE DAME) 
New CalabiYau metrics on C^n 

November 28, 2017, 4:15 PM at Science Center 507 
HARVARD/MIT ALGEBRAIC GEOMETRY SEMINAR 
Valentijn Karemaker (UNIVERSITY OF PENNSYLVANIA) 
Dynamics of Belyi maps 

November 28, 2017, 3:00 PM at MIT 4237 
SPECIAL SEMINAR ON GEOMETRY 
Ryosuke Takahashi (TOHOKU UNIVERSITY) 
A new parabolic flow approach to the KahlerEinstein problem 

November 22, 2017, 4:00  5:15 pm at Science Center 507 
HARVARD/MIT ALGEBRAIC GEOMETRY SEMINAR 
Dhruv Ranganathan (MIT) 
Curves, maps, and singularities in genus one 

November 21, 2017, 3:00 PM at Science Center Hall A 
DIFFERENTIAL GEOMETRY SEMINAR 
SiuCheong Lau (BOSTON UNIVERSITY) 
Moduli theory of Lagrangian immersions and mirror symmetry 

November 21, 2017, 4:15 PM at Science Center 507 
LEARNING SEMINAR ON THE FARGUESFONTAINE CURVE 
Laurent Fargues (INSTITUTE OF MATHEMATICS OF JUSSIEU) 
Structure of the Picard stack and the AbelJacobi morphism for the curve. 

November 20, 2017, 4:00  6:00 PM at Science Center 507 
JOINT DEPARTMENT OF MATHEMATICS AND CMSA RANDOM MATRIX AND PROBABILITY THEORY SEMINAR 
Yue M. Lu (HARVARD JOHN A. PAULSON SCHOOL OF ENGINEERING AND APPLIED SCIENCES) 
Asymptotic Methods for HighDimensional Inference: Precise Analysis, Fundamental Limits, and Optimal Designs 

November 20, 2017, 12:00 PM at Science Center 232 
BRANDEIS, HARVARD, MIT, NORTHEASTERN JOINT COLLOQUIUM AT HARVARD 
Spencer Bloch (UNIVERSITY OF CHICAGO) 
Periods, motivic gamma functions, and Hodge structures 

November 16, 2017, Tea at 4 pm, Talk at 4:30 pm at Science Center Hall A 
NUMBER THEORY SEMINAR 
Lucia Mocz (PRINCETON UNIVERSITY) 
A New Northcott Property for Faltings Height 

November 15, 2017, 3:15 pm *sharp at Science Center 507 
LEARNING SEMINAR ON THE FARGUESFONTAINE CURVE 
Matthew Morrow (INSTITUTE OF MATHEMATICS OF JUSSIEU) 
Perfectoid afterparty: proetale topology 

November 15, 2017, 5:00 pm *note special day/time* at Science Center 507 
HARVARD LOGIC COLLOQUIUM 
Steve Jackson (UNIVERSITY OF NORTH TEXAS) 
Combinatorics of Definable Sets 

November 15, 2017, 4:00  5:00 pm at Logic Center, 2 Arrow St, Rm 420 
JOINT DEPARTMENT OF MATHEMATICS AND CMSA RANDOM MATRIX AND PROBABILITY THEORY SEMINAR 
Daniel Sussman (BOSTON UNIVERSITY) 
Multiple Network Inference: From Joint Embeddings to Graph Matching 

November 15, 2017, 4:00  5:00 pm *note change in time* at CMSA Building, 20 Garden Street, G02 
LOGIC SEMINAR 
Linda Brown Westrick (UNIVERSITY OF CONNECTICUT) 
Towards a notion of computable reducibility for discontinuous functions 

November 14, 2017, 5:15 pm at Science Center 507 
MATHEMATICAL PHYSICS SEMINAR 
Dennis Gaitsgory (HARVARD UNIVERSITY) 
Higher Representation Theory 

November 14, 2017, 4:00 PM at Jefferson 356 
CENTER OF MATHEMATICAL SCIENCES AND APPLICATIONS MATHEMATICAL PHYSICS SEMINAR 
Yusuf Baris Kartal (MIT) 
Dynamical invariants of categories associated to mapping tori 

November 13, 2017, 12:30  1:30 pm at CMSA Building, 20 Garden Street, G02 
LEARNING SEMINAR ON THE FARGUESFONTAINE CURVE 
Matthew Morrow (INSTITUTE OF MATHEMATICS OF JUSSIEU) 
Foundations of perfectoid spacesIV 

November 13, 2017, 4:00  6:00 PM at Science Center 507 
JOINT DEPARTMENT OF MATHEMATICS AND CMSA RANDOM MATRIX AND PROBABILITY THEORY SEMINAR 
Zhe Wang (NYU) 
A Driven Tagged Particle in Onedimensional Simple Exclusion Process 

November 10, 2017, 12:00 PM at Science Center 232 
GAUGE THEORY, TOPOLOGY & SYMPLECTIC GEOMETRY SEMINAR 
Siqi He (CALIFORNIA INSTITUTE OF TECHNOLOGY) 
The extended Bogomolny Equations, Generalized Nahm Pole, and SL(2,R) Higgs bundle 

November 10, 2017, 3:30  4:30 PM at Science Center 507 
THURSDAY SEMINAR 
Jacob Lurie (HARVARD UNIVERSITY) 
Coanalytic Functors 

November 09, 2017, 4:00  6:00 PM at Science Center 507 
BRANDEIS, HARVARD, MIT, NORTHEASTERN JOINT COLLOQUIUM AT HARVARD 
Jeremy Quastel (UNIVERSITY OF TORONTO) 
The KPZ fixed point 

November 09, 2017, Tea at 4 pm, Talk at 4:30 pm at Math Common Room & Science Center Hall A 
INFORMAL DYNAMICS & GEOMETRY SEMINAR 
Eduard Duryev (HARVARD UNIVERSITY) 
Squaretilings of modular curves X(d) 

November 08, 2017, 4:00 PM at Science Center 530 
HARVARD LOGIC COLLOQUIUM 
Victoria Gitman (CUNY GRADUATE CENTER) 
Virtual Large Cardinal Principles 

November 08, 2017, 4:00  5:00 pm at Logic Center, 2 Arrow St, Rm 420 
JOINT DEPARTMENT OF MATHEMATICS AND CMSA RANDOM MATRIX AND PROBABILITY THEORY SEMINAR 
Elchanan Mossel (MIT) 
Optimal Gaussian Partitions 

November 08, 2017, 3:00  4:00 PM at CMSA Building, 20 Garden Street, Room G10 
NUMBER THEORY SEMINAR 
Kazim Buyuboduk (UC DUBLIN AND HARVARD UNIVERSITY) 
Nonordinary symmetric squares and Euler systems of rank 2 

November 08, 2017, 3:15 pm *sharp at Science Center 507 
HARVARD/MIT ALGEBRAIC GEOMETRY SEMINAR 
Matthew Morrow (CNRS) 
(Topological) Hochschild homology and and crystalline cohomology 

November 07, 2017, 3:00 PM at Science Center Hall A 
DIFFERENTIAL GEOMETRY SEMINAR 
Julius Ross (UNIVERSITY OF ILLINOIS AT CHICAGO) 
The MongeAmpere Equation and the HeleShaw flow 

November 07, 2017, 4:15 PM at Science Center 507 
MATHEMATICAL PHYSICS SEMINAR 
Liming Ge (UNH AND CHINESE ACADEMY OF SCIENCES) 
From Riemann and Hilbert to KadisonSinger 

November 07, 2017, 4:00 PM at Jefferson 356 
CENTER OF MATHEMATICAL SCIENCES AND APPLICATIONS MATHEMATICAL PHYSICS SEMINAR 
Pietro Benetti Genolini (UNIVERSITY OF OXFORD) 
Topological AdS/CFT 

November 06, 2017, 12:00 PM at CMSA Building, 20 Garden Street, Room G10 
LEARNING SEMINAR ON THE FARGUESFONTAINE CURVE 
Matthew Morrow (INSTITUTE OF MATHEMATICS OF JUSSIEU) 
Foundations of perfectoid spacesIII 

November 06, 2017, 4:00  6:00 PM at Science Center 507 
GAUGE THEORY, TOPOLOGY & SYMPLECTIC GEOMETRY SEMINAR 
Kevin Sackel (MIT) 
Perverse sheaves from complex Lagrangian intersections 

November 03, 2017, 3:30  4:30 PM at Science Center 507 
CMSA ALGEBRAIC GEOMETRY SEMINAR 
Alexander Moll (IHES) 
Hibert Schemes from Geometric Quantization of Dispersive Periodic BenjaminOno Waves 

November 02, 2017, 3:00 PM at CMSA Building, 20 Garden St, G10 
CENTER OF MATHEMATICAL SCIENCES AND APPLICATIONS MATHEMATICAL PHYSICS SEMINAR 
Chenglong Yu (HARVARD UNIVERSITY) 
PicardFuchs systems of zero loci of vector bundle sections 

November 01, 2017, 12:30  1:30 pm at CMSA Building, 20 Garden St, G10 
JOINT MATHEMATICS AND CMSA RANDOM MATRIX AND PROBABILITY THEORY SEMINAR 
Kay Kirkpatrick (UIUC MATH AND PHYSICS, MIT MATH) 
Quantum groups, Free ArakiWoods Factors, and a Calculus for Moments 

November 01, 2017, 2:00  3:00 pm at CMSA Building, 20 Garden St, G10 
NUMBER THEORY SEMINAR 
Alexander Smith (HARVARD UNIVERSITY) 
$2^\infty$Selmer groups, $2^\infty$class groups, and Goldfeld's conjecture 

November 01, 2017, 3:15 pm *sharp at Science Center 507 
JOINT DEPARTMENT OF MATHEMATICS AND CMSA RANDOM MATRIX AND PROBABILITY THEORY SEMINAR 
WeiMing Wang (CNRS) 
Quasiperiodic solutions to nonlinear PDE's 

November 01, 2017, 3:00  4:00 PM at CMSA Building, 20 Garden Street, Room G10 
INFORMAL GEOMETRY & DYNAMICS SEMINAR 
Bena Tshishiku (HARVARD UNIVERSITY) 
Cohomology of arithmetic groups and characteristic classes of manifold bundles 

November 01, 2017, 4:00 PM at Science Center 530 
CENTER OF MATHEMATICAL SCIENCES AND APPLICATIONS ALGEBRAIC GEOMETRY SEMINAR 
Shamil Shakirov (HARVARD UNIVERSITY) 
Undulation invariants of plane curves 

November 01, 2017, 5:00 PM *note time change* at CMSA Building, 20 Garden Street, Room G10 
HARVARD/MIT ALGEBRAIC GEOMETRY SEMINAR 
Nick Rozenblyum (UNIVERSITY OF CHICAGO) 
Shifted symplectic structures and quantization 

October 31, 2017, 3:00 PM at MIT 4237 
LOGIC SEMINAR 
Sebastien Vasey (HARVARD UNIVERSITY) 
Nonelementary classification theory 

October 31, 2017, 5:15 pm at Science Center 507 
DIFFERENTIAL GEOMETRY SEMINAR 
Bill Goldman (BROWN UNIVERSITY AND UNIVERSITY OF MARYLAND) 
Dynamics on moduli spaces of flat connections 

October 31, 2017, 4:15 PM at Science Center 507 
MATHEMATICAL PHYSICS SEMINAR 
Zhenghan Wang (MICROSOFT) 
Reconstructing chiral CFTs/VOAs from 2D TQFTs/MTCs 

October 31, 2017, 4:00 PM at Jefferson 356 
LEARNING SEMINAR ON THE FARGUESFONTAINE CURVE 
Matthew Morrow (INSTITUTE OF MATHEMATICS OF JUSSIEU) 
Foundations of perfectoid spacesII 

October 30, 2017, 4:00  6:00 PM at Science Center 507 
GAUGE THEORY, TOPOLOGY & SYMPLECTIC GEOMETRY SEMINAR 
Piotr Suwara (MIT) 
The Category of Perverse Sheaves is a Stack, cont'd 

October 27, 2017, 3:30  4:30 PM at Science Center 507 
NUMBER THEORY SEMINAR 
Pierre Colmez (UPMC AND IAS) 
On the cohomology of padic analytic curves 

October 25, 2017, 3:15 pm *sharp at Science Center 507 
JOINT DEPARTMENT OF MATHEMATICS AND CMSA RANDOM MATRIX & PROBABILITY THEORY SEMINAR 
Subhabrata Sen (MICROSOFT AND MIT) 
Partitioning sparse random graphs: connections with meanfield 

October 25, 2017, 2:00  3:00 pm at CMSA Building, 20 Garden St, G10 
INFORMAL DYNAMICS & GEOMETRY SEMINAR 
Sander Kupers (HARVARD UNIVERSITY) 
The metastable homology of mapping class groups 

October 25, 2017, 4:00 PM at Science Center 530 
JOINT DEPARTMENT OF MATHEMATICS AND CMSA RANDOM MATRIX & PROBABILITY THEORY SEMINAR 
Noga Alon (TEL AVIV UNIVERSITY) 
Random Cayley Graphs 

October 25, 2017, 3:00  4:00 PM at CMSA Building, 20 Garden St, G10 
HARVARD/MIT ALGEBRAIC GEOMETRY SEMINAR 
David Hansen (COLUMBIA UNIVERSITY) 
Vanishing theorems in rigid analytic geometry 

October 24, 2017, 1:30  2:30 pm *note change in time at MIT 24449 *note change in location 
DIFFERENTIAL GEOMETRY SEMINAR 
Yevgeniy Liokumovich (MIT) 
Heegaard splittings isotopic to an index 1 minimal surface 

October 24, 2017, 4:15 PM at Science Center 507 
LOGIC SEMINAR 
Will Boney (HARVARD UNIVERSITY) 
Interpolation beyond $\mathbb{L}_{\omega_1, \omega}$ 

October 24, 2017, 5:15 pm at Science Center 507 
CENTER OF MATHEMATICAL SCIENCES AND APPLICATIONS MATHEMATICAL PHYSICS SEMINAR 
Florian Beck (UNIVERSITY OF HAMBURG) 
Hitchin systems in terms of CalabiYau threefolds 

October 23, 2017, 12:00 PM at CMSA Building, 20 Garden Street, Room G10 
LEARNING SEMINAR ON THE FARGUESFONTAINE CURVE 
Matthew Morrow (INSTITUTE OF MATHEMATICS OF JUSSIEU) 
Review of foundations of perfectoid spaces 

October 23, 2017, 4:00  6:00 PM at Science Center 507 
JOINT DEPARTMENT OF MATHEMATICS AND CMSA RANDOM MATRIX AND PROBABILITY THEORY SEMINAR 
Madhu Sudan (CS, HARVARD) 
General Strong Polarization 

October 23, 2017, 12:00  1:00 PM at Science Center 232 
GAUGE THEORY, TOPOLOGY & SYMPLECTIC GEOMETRY SEMINAR 
Piotr Suwara (MIT) 
The Category of Perverse Sheaves is a Stack 

October 20, 2017, 3:30  4:30 PM at Science Center 507 
THURSDAY SEMINAR 
Jacob Lurie (HARVARD UNIVERSITY) 
The BousfieldKuhn functor 

October 19, 2017, 4:00  6:00 PM at Science Center 507 
NUMBER THEORY SEMINAR 
V. Kumar Murty (UNIVERSITY OF TORONTO) 
The Lindelof class of Lfunctions 

October 18, 2017, 3:15 pm at Science Center 507 
INFORMAL DYNAMICS & GEOMETRY SEMINAR 
Rohini Ramadas (HARVARD UNIVERSITY) 
Algebraic dynamics from topological and holomorphic dynamics 

October 18, 2017, 4:00 PM at Science Center 530 
CENTER OF MATHEMATICAL SCIENCES AND APPLICATIONS MATHEMATICAL PHYSICS SEMINAR 
Nati Blaier (CMSA, HARVARD) 
Geometry of the symplectic Torelli group 

October 18, 2017, 12:00 PM at CMSA Building, 20 Garden St, G10 
DIFFERENTIAL GEOMETRY SEMINAR 
Gang Liu (NORTHWESTERN) 
Recent progress of Yau's uniformization conjecture 

October 17, 2017, 4:00 PM at Science Center 507 
HARVARD/MIT ALGEBRAIC GEOMETRY SEMINAR 
Dave Jensen (UNIVERSITY OF KENTUCKY) 
Linear Systems on General Curves of Fixed Gonality 

October 17, 2017, 3:00 PM at Science Center Hall A 
LOGIC SEMINAR 
Cameron Freer (BORELIAN AND REMINE) 
Feedback Computability 

October 17, 2017, 5:15 pm at Science Center 507 
LEARNING SEMINAR ON THE FARGUESFONTAINE CURVE 
Zijian Yao (HARVARD UNIVERSITY) 
Properties of the curve (incl. line bundles) 

October 16, 2017, 4:00  6:00 PM at Science Center 507 
GAUGE THEORY, TOPOLOGY & SYMPLECTIC GEOMETRY SEMINAR 
Jiangfeng Lin (MIT) 
Nearby cycles and vanishing cycles 

October 13, 2017, 3:30  4:30 PM at Science Center 507 
THURSDAY SEMINAR 
Jacob Lurie (HARVARD UNIVERSITY) 
v_nPeriodic Homotopy Groups 

October 12, 2017, 4:00  6:00 PM at Science Center 507 
SPECIAL MATHEMATICAL PHYSICS SEMINAR 
Yasayuki Kawahigashi (UNIVERSITY OF TOKYO) 
From Vertex Operator Algebras to Operator Algebras and Back 

October 12, 2017, 2:00 pm *please note special date, time and location at Jefferson 453 
NUMBER THEORY SEMINAR 
Joseph Silverman (BROWN UNIVERSITY) 
Moduli Spaces of Rational Maps and a Dynamical Shafarevich Theorem 

October 11, 2017, 3:15 pm *sharp at Science Center 507 
LOGIC SEMINAR 
Nate Ackerman (HARVARD UNIVERSITY) 
Trees, Sheaves and Definition by Recursion 

October 10, 2017, 5:15 PM at Science Center 507 
HARVARD/MIT ALGEBRAIC GEOMETRY SEMINAR 
ManWai Cheung (HARVARD UNIVERSITY) 
Quiver representations and theta functions 

October 10, 2017, 3:00 PM at Science Center 411 
MATHEMATICAL PHYSICS SEMINAR 
Mike Hopkins (HARVARD UNIVERSITY) 
Reflection Positivity and Invertible Topological Phases 

October 10, 2017, 4:00 PM at Jefferson 356 
GAUGE THEORY, TOPOLOGY & SYMPLECTIC GEOMETRY SEMINAR 
Jianfeng Lin (MIT) 
Constructible sheaves and nearby cycles 

October 06, 2017, 3:30 PM at Science Center 507 
INFORMAL DYNAMICS & GEOMETRY SEMINAR 
Nattalie Tamam (TEL AVIV UNIVERSITY) 
Divergent trajectories in arithmetic homogeneous spaces of rational rank two 

October 04, 2017, 4:00 PM at Science Center 530 
CENTER OF MATHEMATICAL SCIENCES AND APPLICATIONS MATHEMATICAL PHYSICS SEMINAR 
Dingxin Zhang (BRANDEIS UNIVERSITY) 
<1 part of slopes under degeneration 

October 04, 2017, 12:00  1:00 PM at CMSA Building, 20 Garden Street, Room G10 
NUMBER THEORY SEMINAR 
David Corwin (MIT) 
Etale Homotopy Obstructions for Rational Points Applied to Open Subvarieties 

October 04, 2017, 3:15 pm at Science Center 507 
LOGIC SEMINAR 
Jason Rute () 
A uniform reducibility in computably presented Polish spaces 

October 03, 2017, 5:15 pm at Science Center 507 
MATHEMATICAL PHYSICS SEMINAR 
Alina Vdovina (UNIVERSITY OF NEWCASTLE AND NEW YORK UNIVERSITY) 
Buildings, surfaces and quaternions 

October 03, 2017, 4:00 PM at Jefferson 356 
DIFFERENTIAL GEOMETRY SEMINAR 
Valentino Tosatti (NORTHWESTERN UNIVERSITY) 
Special Kahler geometry and collapsing 

October 03, 2017, 4:15 PM at Science Center 507 
HARVARD/MIT ALGEBRAIC GEOMETRY SEMINAR 
Yuchen Liu (YALE UNIVERSITY) 
Kstability of cubic threefolds 

October 03, 2017, 3:00 PM at MIT 4237 
LEARNING SEMINAR ON THE FARGUESFONTAINE CURVE 
Jacob Lurie (HARVARD UNIVERSITY) 
Constructing Functions on Y: Power Series in the Variable p 

October 02, 2017, 4:00  6:00 PM at Science Center 507 
BOSTON GRADUATE TOPOLOGY SEMINAR 
Melissa Zhang (BOSTON COLLEGE) 
Annular Khovanov homology of 2periodic links 

September 30, 2017, 10:30  11:15 am at Science Center 507 
BOSTON GRADUATE TOPOLOGY SEMINAR 
Yu Pan (MIT) 
Augmentations and Exact Lagrangian cobordisms 

September 30, 2017, 11:30 am  12:15 pm at Science Center 507 
BOSTON GRADUATE TOPOLOGY SEMINAR 
Cliff Taubes (HARVARD UNIVERSITY) 
What are Z/2 harmonic forms? 

September 30, 2017, 9:30  10:15 am at Science Center 507 
GAUGE THEORY, TOPOLOGY & SYMPLECTIC GEOMETRY SEMINAR 
Boyu Zhang (HARVARD UNIVERSITY) 
Orientation and duality 

September 29, 2017, 3:30  4:30 PM at Science Center 507 
CENTER OF MATHEMATICAL SCIENCES AND APPLICATIONS MATHEMATICAL PHYSICS SEMINAR 
YuWei Fan (HARVARD UNIVERSITY) 
WeilPetersson geometry on the space of Bridgeland stability conditions 

September 27, 2017, 12:00  1:00 PM at CMSA Building, 20 Garden Street, Room G10 
RANDOM MATRIX AND PROBABILITY THEORY SEMINAR 
Herbert Spohn (TECHNICAL UNIVERSITY MUNICH & COLUMBIA) 
Hydrodynamics of integrable classical and quantum systems 

September 27, 2017, 3:00  4:00 PM at CMSA Building, 20 Garden Street, Room G10 
NUMBER THEORY SEMINAR 
David Rohrlich (BOSTON UNIVERSITY) 
Counting Artin representatives 

September 27, 2017, 3:15 pm at Science Center 507 
INFORMAL DYNAMICS & GEOMETRY SEMINAR 
Yusheng Luo (HARVARD UNIVERSITY) 
Trees in degenerating families of rational maps and isometric Gactions 

September 27, 2017, 4:00 PM at Science Center 530 
HARVARD/MIT ALGEBRAIC GEOMETRY SEMINAR 
Alina Marian (NORTHEASTERN UNIVERSITY) 
On the intersection theory of Hilbert schemes of points on a surface 

September 26, 2017, 3:00 PM at Science Center Hall A 
MATHEMATICAL PHYSICS SEMINAR 
Jinsong Wu (HARVARD UNIVERSITY) 
The BrascampLieb Inequalities for Planar Algebras 

September 26, 2017, 4:00 PM at Jefferson 356 
LOGIC SEMINAR 
Gabriel Goldberg (HARVARD UNIVERSITY) 
The least strongly compact cardinal and the Ultrapower Axiom 

September 26, 2017, 5:15 pm at Science Center 507 
LEARNING SEMINAR ON THE FARGUEFONTAINE CURVE 
Dennis Gaitsgory (HARVARD UNIVERSITY) 
The relative FarguesFontaine curve and ``untilts", continued 

September 25, 2017, 4:00  5:30 PM at Science Center 507 
GAUGE THEORY, TOPOLOGY & SYMPLECTIC GEOMETRY SEMINAR 
Boyu Zhang (HARVARD UNIVERSITY) 
Derived category of sheaves and the six functors 

September 22, 2017, 3:30  4:30 PM at Science Center 507 
THURSDAY SEMINAR 
Mike Hopkins (HARVARD UNIVERSITY) 
Unstable chromatic localizations 

September 21, 2017, 4:00  6:00 PM at Science Center 507 
INFORMAL DYNAMICS & GEOMETRY SEMINAR 
Nick Salter (HARVARD UNIVERSITY) 
Plane curves, (higher) spin structures, and mapping class groups 

September 20, 2017, 4:00 PM at Science Center 530 
NUMBER THEORY SEMINAR 
Koji Shimizu (HARVARD UNIVERSITY) 
Local constancy of generalized HodgeTate weights of a padic local system 

September 20, 2017, 3:15  4:15 pm at Science Center 507 
HARVARD/MIT ALGEBRAIC GEOMETRY SEMINAR 
Giulia Sacca (MIT) 
Degenerations of hyperkahler manifolds 

September 19, 2017, 3:00 PM at MIT 4237 
DIFFERENTIAL GEOMETRY SEMINAR 
Peter Smillie (HARVARD UNIVERSITY) 
Weingarten foliations of three dimensional Lorentzian spaceforms 

September 19, 2017, 4:00  5:15 pm at Science Center 507 
LOGIC SEMINAR 
Will Boney (HARVARD UNIVERSITY) 
Modeltheoretic characterizations of large cardinals 

September 19, 2017, 5:15 PM at Science Center 507 
CENTER OF MATHEMATICAL SCIENCES AND APPLICATIONS MATHEMATICAL PHYSICS SEMINAR 
Yoosik Kim (BOSTON UNIVERSITY) 
Monotone Lagrangian tori in cotangent bundles 

September 18, 2017, 12:00  1:00 PM at CMSA Building, 20 Garden Street, Room G10 
LEARNING SEMINAR ON THE FARGUEFONTAINE CURVE 
Dennis Gaitsgory (HARVARD UNIVERSITY) 
The FarguesFontaine curve and "untilts" 

September 18, 2017, 4:00  5:30 PM *note earlier ending at Science Center 507 
GAUGE THEORY, TOPOLOGY & SYMPLECTIC GEOMETRY SEMINAR 
Boyu Zhang (HARVARD UNIVERSITY) 
Flat SL_2(C) connections and complex Lagrangian intersections 

September 15, 2017, 3:30 PM at Science Center 507 
CENTER OF MATHEMATICAL SCIENCES AND APPLICATIONS ALGEBRAIC GEOMETRY SEMINAR 
YuWei Fan (HARVARD UNIVERSITY) 
Entropy of an autoequivalence on CalabiYau manifolds 

September 14, 2017, 3:30  4:30 PM at CMSA Building, 20 Garden Street, Room G10 
THURSDAY SEMINAR 
Mike Hopkins (HARVARD UNIVERSITY) 
The BousfieldKuhn functor 

September 14, 2017, 4:00  6:00 PM at Science Center 507 
INFORMAL DYNAMICS & GEOMETRY SEMINAR 
Philip Engel (HARVARD UNIVERSITY) 
Tilings and Hurwitz Theory 

September 13, 2017, 4:00  6:00 PM at Science Center 530 
NUMBER THEORY SEMINAR 
Ari Shnidman (BOSTON COLLEGE) 
Ranks of abelian varieties in quadratic twist families 

September 13, 2017, 3:15  4:15 pm at Science Center 507 
LOGIC SEMINAR 
Sebastien Vasey (HARVARD UNIVERSITY) 
Internal sizes in $\mu$abstract elementary classes 

September 12, 2017, 5:15 pm at Science Center 507 
MATHEMATICAL PHYSICS SEMINAR 
William Norledge (HARVARD UNIVERSITY) 
A Construction of Lattices in Buildings 

September 12, 2017, 4:00 PM at Jefferson 356 
HARVARD/MIT ALGEBRAIC GEOMETRY SEMINAR 
Rohini Ramadas (HARVARD UNIVERSITY) 
Dynamics on the moduli space of pointconfigurations on the Riemann Sphere 

September 12, 2017, 3:00 PM at Science Center 411 
DIFFERENTIAL GEOMETRY SEMINAR 
Jordan Keller (HARVARD BLACK HOLE INITIATIVE) 
Linear Stability of Higher Dimensional Schwarzschild Black Holes 

September 12, 2017, 4:00  5:15 pm at Science Center 507 
CENTER OF MATHEMATICAL SCIENCES AND APPLICATIONS MATHEMATICAL PHYSICS SEMINAR 
YuShen Lin (HARVARD  CENTER OF MATHEMATICAL SCIENCES & APPLICATIONS) 
From the Decomposition of PicardLefschetz Transformation to Tropical Geometry 

September 11, 2017, 12:00  1:00 PM at CMSA Building, 20 Garden Street, Room G10 
LEARNING SEMINAR ON THE FARGUESFONTAINE CURVE 
Jacob Lurie (HARVARD UNIVERSITY) 
An Overview 

September 11, 2017, 4:00  6:00 PM at Science Center 232 
THURSDAY SEMINAR 
Jacob Lurie (HARVARD UNIVERSITY) 
To Rational Homotopy Theory and Beyond 

September 07, 2017, 4:00  6:00 PM *note new time* at Science Center 507 
MATHEMATICAL PHYSICS SEMINAR 
Arthur Jaffe and Zhengwei Liu (HARVARD UNIVERSITY) 
Introduction to the Mathematical Picture Language Project 

September 05, 2017, 4:00 PM at Jefferson 356 
LOGIC SEMINAR 
Nate Ackerman (HARVARD UNIVERSITY) 
Vaught's Conjecture for a Grothendieck topos 

September 05, 2017, 5:00  6:00 PM at Science Center 507 
CENTER OF MATHEMATICAL SCIENCES AND APPLICATIONS SPECIAL ALGEBRAIC GEOMETRY SEMINAR 
Will Donovan (KAVLI IPMU) 
Twists and braids for general threefold flops 

August 31, 2017, 3:00 PM at CMSA Building, 20 Garden Street, Room G10 
CENTER OF MATHEMATICAL SCIENCES & APPLICATIONS SPECIAL SEMINAR 
Juven Wang (IAS) 
Link Invariants of Topological Quantum Matter and New Topological Boundary Conditions 

May 24, 2017, 11:30 AM at Science Center 507 
CENTER OF MATHEMATICAL SCIENCES AND APPLICATIONS SPECIAL SEMINAR 
ZhengCheng Gu (CHINESE UNIVERSITY OF HONG KONG) 
A topological world: from topological material to the origin of elementary particles 

May 23, 2017, 12:00 pm at CMSA Building, 20 Garden St, G10 
CENTER OF MATHEMATICAL SCIENCES AND APPLICATIONS COLLOQUIUM 
Kwok Wai Chan (CHINESE UNIVERSITY OF HONG KONG) 
Scattering diagrams from asymptotic analysis on MaurerCartan equations 

May 17, 2017, 3:30  4:30 pm at CMSA Building, 20 Garden St, G10 
SPECIAL LECTURE SERIES 
JeanPierre Serre (COLLèGE DE FRANCE) 
Cohomological invariants mod 2 of Weyl groups, Pt. 2 

May 09, 2017, 2:00 pm at Science Center 507 
SPECIAL LECTURE SERIES 
JeanPierre Serre (COLLèGE DE FRANCE) 
Cohomological invariants mod 2 of Weyl groups, Pt. 1 

May 08, 2017, 3:00 pm at Science Center 507 
GAUGE THEORY, TOPOLOGY AND SYMPLECTIC GEOMETRY SEMINAR 
Daniel CristofaroGardiner (HARVARD UNIVERSITY) 
Two or infinity 

May 05, 2017, 3:30  4:30 pm at Science Center 507 
SPECIAL BASIC NOTIONS SEMINAR 
JeanPierre Serre (COLLèGE DE FRANCE) 
Some simple facts on lattices and orthogonal group representations 

May 03, 2017, 3:00 pm at Science Center Hall D 
CENTER OF MATHEMATICAL SCIENCES AND APPLICATIONS COLLOQUIUM 
XueMei Li (UNIV. OF WARWICK) 
Perturbation to conservation law and stochastic averaging 

May 03, 2017, 4:30 PM at Science Center 507 
JOINT DEPT OF MATHEMATICS AND CENTER OF MATHEMATICAL SCIENCES & APPLICATIONS RANDOM MATRIX AND PROBABILITY THEORY SEMINAR 
Ilya Soloveychik (HARVARD SCHOOL OF ENGINEERING & APPLIED SCIENCES) 
Deterministic Random Matrices 

May 03, 2017, 3:00 pm at CMSA Building, 20 Garden St, G02 
INFORMAL GEOMETRY & DYNAMICS SEMINAR 
Ahmad Rafiqi (CORNELL UNIVERSITY) 
Surface homeomorphisms from matrices and typical properties of biPerron numbers 

May 03, 2017, 4:00  6:00 pm at Science Center 507 
CENTER OF MATHEMATICAL SCIENCES AND APPLICATIONS COLLOQUIUM 
Simona Cocco (CNRS & ECOLE NORMALE SUPéRIEURE, PARIS, FRANCE) 
Reverse modeling of protein sequence data: from graphical models to structural and functional predictions. 

May 02, 2017, 4:00pm at CMSA Building, 20 Garden St, G10 
THURSDAY SEMINAR 
Marc Hoyois (MIT) 
BlochKato implies BeilinsonLichtenbaum 

April 27, 2017, 4:00  6:00 pm *note change in time this week* at Science Center 507 
CENTER OF MATHEMATICAL SCIENCES AND APPLICATIONS COLLOQUIUM 
Mehran Kardar (MIT) 
Levitation by Casimir forces in and out of equilibrium 

April 27, 2017, 3:00 pm at CMSA Building, 20 Garden St, G10 
CENTER OF MATHEMATICAL SCIENCES & APPLICATIONS SPECIAL SEMINAR 
David Carchedi (GEORGE MASON UNIVERSITY) 
Dgmanifolds as a model for derived manifolds 

April 27, 2017, 2:00  3:00 pm at CMSA Building, 20 Garden St, G10 
INFORMAL GEOMETRY & DYNAMICS SEMINAR 
Eduard Duryev (HARVARD UNIVERSITY) 
Dilation surfaces: geometry, dynamics and moduli space. Part 2 

April 26, 2017, 4:00  6:00 pm at Science Center 530 
NUMBER THEORY SEMINAR 
Henri Darmon (MCGILL UNIVERSITY) 
Singular moduli for real quadratic fields: a rigid analytic approach. 

April 26, 2017, 3:00 PM at Science Center 507 
RANDOM MATRIX & PROBABILITY SEMINAR 
Ashkan Nikeghbali (UNIVERSITY OF ZURICH) 
Random Matrix models in number theory: an infinite dimension point of view. 

April 26, 2017, 2:00  3:00 pm at CMSA Building, 20 Garden St, G10 
HARVARD MIT ALGEBRAIC GEOMETRY SEMINAR 
Yaim Cooper (HARVARD UNIVERSITY) 
A Fock Space Approach to Severi Degrees 

April 25, 2017, 3:00 pm at Science Center 507 
MATHEMATICAL PHYSICS SEMINAR 
Fei Wei (UNIVERSITY OF NEW HAMPSHIRE) 
On divisor function in arithmetic progressions (joint work with Yitang Zhang and Boqing Xue) 

April 25, 2017, 2:45 PM at Jefferson 453 
DIFFERENTIAL GEOMETRY SEMINAR 
Georgios Daskalopoulos (BROWN UNIVERSITY) 
Rigidity of Group Actions in General NPC Spaces 

April 25, 2017, 4:15 pm at Science Center 507 
CENTER OF MATHEMATICAL SCIENCES AND APPLICATIONS MATHEMATICAL PHYSICS SEMINAR 
Patrick Jefferson (HARVARD UNIVERSITY) 
Towards A Classification of 5d N = 1 SCFTs 

April 24, 2017, 12:00 pm at CMSA Building, 20 Garden St, G10 
THURSDAY SEMINAR 
Dan BerwickEvans (UNIVERSITY OF ILLINOIS URBANACHAMPAIGN) 
Field theories and elliptic cohomology from the vantage of characters 

April 21, 2017, 3:00 pm at MIT 2131 *note special location* 
GAUGE THEORY, TOPOLOGY AND SYMPLECTIC GEOMETRY SEMINAR 
Jonathan Weitsman (NORTHWESTERN UNIVERSITY) 
On the geometric quantization of (some) Poisson manifolds 

April 21, 2017, 3:30  4:30 pm at Science Center 507 
CENTER OF MATHEMATICAL SCIENCES AND APPLICATIONS SPECIAL LECTURE SERIES ON DONALDSONTHOMAS AND GROMOVWITTEN THEORIES 
Artan Sheshmani (THE QGM AARHUS AND CMSA HARVARD) 
Proof of Sduality conjecture on quintic threefold II 

April 21, 2017, 9:00  10:30 AM at CMSA Building, 20 Garden St, G10 
NUMBER THEORY SEMINAR 
Noam Elkies (HARVARD UNIVERSITY) 
Remarks on isogenies between elliptic curves over lowdegree number fields 

April 19, 2017, 3:00 pm at Science Center 507 
CENTER OF MATHEMATICAL SCIENCES & APPLICATIONS COLLOQUIUM 
Cumrun Vafa (HARVARD PHYSICS) 
String Swampland 

April 19, 2017, 4:30 PM at CMSA Building, 20 Garden St, G10 
JOINT DPT OF MATHEMATICS AND CENTER OF MATHEMATICAL SCIENCES AND APPLICATIONS RANDOM MATRIX AND PROBABILITY THEORY SEMINAR 
Weijun Xu (UNIVERSITY OF WARWICK) 
Meaing of infinities in KPZ and Phi^4_3 

April 19, 2017, 3:00  4:00 PM *note correction of time* at CMSA Building, 20 Garden St, G10 
INFORMAL GEOMETRY & DYNAMICS SEMINAR 
Jane Wang (MIT) 
Dilation surfaces: geometry, dynamics and moduli space. Part 1 

April 19, 2017, 4:00 PM at Science Center 530 
CENTER OF MATHEMATICAL SCIENCES AND APPLICATIONS SPECIAL LECTURE SERIES ON DONALDSONTHOMAS AND GROMOVWITTEN THEORIES 
Artan Sheshmani (THE QGM AARHUS AND CMSA HARVARD) 
Proof of Sduality conjecture on quintic threefold I 

April 19, 2017, 9:00  10:30 AM at CMSA Building, 20 Garden St, G10 
DIFFERENTIAL GEOMETRY SEMINAR 
Fangyang Zheng (OHIO STATE UNIVERSITY) 
On compact Kahler manifolds with positive or negative holomorphic sectional curvature 

April 18, 2017, 4:15 pm at Science Center 507 
MATHEMATICAL PHYSICS SEMINAR 
Charles Zhaoxi Xiong (HARVARD UNIVERSITY) 
What generalized cohomology theories may have to do with symmetry protected topological phases 

April 18, 2017, 2:45 PM at Jefferson 453 
HARVARD MIT ALGEBRAIC GEOMETRY SEMINAR 
Angelo Vistoli (SCUOLA NORMALE) 
Motive classes of classifying spaces 

April 18, 2017, 3:00 pm at Science Center 507 
CENTER OF MATHEMATICAL SCIENCES AND APPLICATIONS MATHEMATICAL PHYSICS SEMINAR 
Ingmar Saberi (UNIVERSITäT HEIDELBERG) 
Holographic lattice field theories 

April 17, 2017, 12:00 pm at CMSA Building, 20 Garden St, G10 
CENTER OF MATHEMATICAL SCIENCES AND APPLICATIONS SPECIAL LECTURE SERIES ON DONALDSONTHOMAS AND GROMOVWITTEN THEORIES 
Artan Sheshmani (AARHUS UNIVERSITY/CMSA) 
DT versus MNOP invariants and S_duality conjecture on general complete intersections 

April 14, 2017, 9:00  10:30 am at CMSA Building, 20 Garden St, G10 
GAUGE THEORY, TOPOLOGY AND SYMPLECTIC GEOMETRY SEMINAR 
Alvaro Pelayo (UC SAN DIEGO) 
Introduction to symplectic and spectral geometry of finite dimensional integrable systems 

April 14, 2017, 3:30  4:30 pm at Science Center 507 
CENTER OF MATHEMATICAL SCIENCES AND APPLICATIONS SPECIAL SEMINAR 
Lothar Göttsche (ICTP) 
Virtual refinements of the VafaWitten formula 

April 13, 2017, 9:30 am at CMSA Building, 20 Garden St, G10 
HARVARD, BRANDEIS, MIT, NORTHEASTERN JOINT COLLOQUIUM AT HARVARD 
Tom Church (STANFORD UNIVERSITY) 
Asymptotic representation theory over Z 

April 13, 2017, Tea at 4:00 PM, the Austine & Chilton McDonnell Common Room, Science Center 4th Floor, Talk at 4:30 pm at Science Center Hall A 
MATHEMATICAL PHYSICS SEMINAR 
Nima ArkaniHamed (IAS, PRINCETON) 
The Amplituhedron and Scattering Amplitudes as Binary Code 

April 13, 2017, 2:45 pm at Jefferson 453 
JOINT DPT OF MATHEMATICS AND CENTER OF MATHEMATICAL SCIENCES AND APPLICATIONS RANDOM MATRIX AND PROBABILITY THEORY SEMINAR 
Oanh Nguyen (YALE UNIVERSITY) 
Roots of random polynomials 

April 12, 2017, 2:00  3:00 pm at CMSA Building, 20 Garden St, G10 
CENTER OF MATHEMATICAL SCIENCES AND APPLICATIONS SPECIAL LECTURE SERIES ON DONALDSONTHOMAS AND GROMOVWITTEN THEORIES 
Artan Sheshmani (AARHUS UNIVERSITY/CMSA) 
Stable pair PT invariants on nodal fibrations: perverse sheaves, Wallcrossings, and an analog of fiberwise Tduality 

April 12, 2017, 9:00  10:30 am at CMSA Building, 20 Garden St, G10 
JOINT DEPT OF MATHEMATICS AND CENTER OF MATHEMATICAL SCIENCES & APPLICATIONS RANDOM MATRIX AND PROBABILITY THEORY SEMINAR 
Subhajit Goswami (UNIVERSITY OF CHICAGO) 
Liouville firstpassage percolation and Watabiki's prediction 

April 12, 2017, 3:00 pm at CMSA Building, 20 Garden St, G10 
CENTER OF MATHEMATICAL SCIENCES AND APPLICATIONS COLLOQUIUM 
Shlomo Razamat (ISRAEL INSTITUTE OF TECHNOLOGY) 
Complicated four dimensional physics and simple mathematics 

April 12, 2017, 4:30 pm at CMSA Building, 20 Garden St, G10 
NUMBER THEORY SEMINAR 
Jan Vonk (MCGILL UNIVERSITY) 
Crystalline cohomology of towers of curves 

April 12, 2017, 3:00 pm at Science Center 507 
HARVARD MIT ALGEBRAIC GEOMETRY SEMINAR 
Mihnea Popa (NORTHWESTERN UNIVERSITY) 
Hodge ideals 

April 11, 2017, 3:00 pm at MIT 4153 
DIFFERENTIAL GEOMETRY SEMINAR 
Luca Spolaor (MIT) 
Optimal regularity for three dimensional mass minimizing cones in arbitrary codimension 

April 11, 2017, 4:15 pm at Science Center 507 
CENTER OF MATHEMATICAL SCIENCES AND APPLICATIONS MATHEMATICAL PHYSICS SEMINAR 
Burkhard Schwab (CMSA) 
Large Gauge symmetries in Supergravity 

April 10, 2017, 12:00 pm at CMSA Building, 20 Garden St, G10 
HARVARD MIT ALGEBRAIC GEOMETRY SEMINAR 
Mihnea Popa (NORTHWESTERN UNIVERSITY) 
Families of varieties and Hodge theory 

April 10, 2017, 12:00 pm **Special Talk** at MIT 2361 
CENTER OF MATHEMATICAL SCIENCES AND APPLICATIONS SPECIAL LECTURE SERIES ON DONALDSONTHOMAS AND GROMOVWITTEN THEORIES 
Artan Sheshmani (AARHUS UNIVERSITY/CMSA) 
Stable pair PT invariants on nodal fibrations: perverse sheaves, Wallcrossings, and an analog of fiberwise Tduality 

April 07, 2017, 9:00  10:30 am at CMSA Building, 20 Garden St, G10 
CENTER OF MATHEMATICAL SCIENCES AND APPLICATIONS SPECIAL SEMINAR 
John Loftin (RUTGERS UNIVERSITY) 
Families of projective domains and neckseparating degenerations of convex $RP^2$ surfaces 

April 06, 2017, 3:00  4:30 pm at Science Center 232 
CENTER OF MATHEMATICAL SCIENCES AND APPLICATIONS SPECIAL LECTURE SERIES ON DONALDSONTHOMAS AND GROMOVWITTEN THEORIES 
Artan Sheshmani (AARHUS UNIVERSITY/CMSA) 
Stable pair PT invariants on smooth fibrations 

April 05, 2017, 9:00  10:30 am at CMSA Building, 20 Garden St, G10 
JOINT DEPT OF MATHEMATICS AND CENTER OF MATHEMATICAL SCIENCES & APPLICATIONS RANDOM MATRIX AND PROBABILITY THEORY SEMINAR 
Steven Heilman (UCLA) 
Noncommutative Majorization Principles and Grothendieck's Inequality 

April 05, 2017, 3:00 pm at CMSA Building, 20 Garden St, G10 
NUMBER THEORY SEMINAR 
Frank Calegari (UNIVERSITY OF CHICAGO) 
Modularity lifting theorems beyond Shimura varieties 

April 05, 2017, 3:00 pm at Science Center 507 
HARVARD/MIT ALGEBRAIC GEOMETRY SEMINAR 
Scott Mullane (HARVARD UNIVERSITY) 
Extremal effective divisors in Mg,n 

April 04, 2017, 3:00 pm at Science Center 507 
DIFFERENTIAL GEOMETRY SEMINAR 
ChiuChu Melissa Liu (COLUMBIA UNIVERSITY) 
GW theory, FJRW theory, and MSP fields 

April 04, 2017, 4:15 pm *change in time this week* at Science Center 507 *change in location this week* 
MATHEMATICAL PHYSICS SEMINAR 
Zhengwei Liu (HARVARD UNIVERSITY) 
Quon language in mathemtics 

April 04, 2017, 2:45 pm at Jefferson 453 
CENTER OF MATHEMATICAL SCIENCES AND APPLICATIONS MATHEMATICAL PHYSICS SEMINAR 
Nathan Haouzi (UC BERKELEY) 
Little Strings and Classification of surface defects 

April 03, 2017, 12:00 pm at CMSA Building, 20 Garden St, G02 
CENTER OF MATHEMATICAL SCIENCES AND APPLICATIONS SPECIAL SEMINAR 
RakKyeong Seong (UPPSALA UNIVERSITY) 
The Mirror and the Elliptic Genus of Brane Brick Models 

March 30, 2017, 3:00 pm at CMSA Building, 20 Garden St, G02 
BRANDEIS, HARVARD, MIT, NORTHEASTERN JOINT MATHEMATICS COLLOQUIUM AT HARVARD 
Alexander Goncharov (YALE UNIVERSITY) 
Quantum Hodge Field Theory 

March 30, 2017, 4:30 pm, Tea at 4 pm in the Math Common Room at Science Center Hall A 
THURSDAY SEMINAR 
Jacob Lurie (HARVARD UNIVERSITY) 
Etale motivic cohomolgy II 

March 30, 2017, 3:00  5:00 PM at Science Center 507 
NUMBER THEORY SEMINAR 
Martin Olsson (UC BERKELEY) 
Local fundamental groups and reduction mod $p$ 

March 29, 2017, 3:00 pm at Science Center 507 
CENTER OF MATHEMATICAL SCIENCES AND APPLICATIONS COLLOQUIUM 
Leslie Greengard (COURANT INSTITUTE) 
Inverse problems in acoustic scattering and cryoelectron microscopy 

March 29, 2017, 4:00 pm at CMSA Building, 20 Garden St, G10 
INFORMAL GEOMETRY & DYNAMICS SEMINAR 
Matt Bainbridge (INDIANA UNIVERSITY) 
Smooth compactifications of strata of abelian differentials 

March 29, 2017, 4:00 pm at Science Center 530 
JOINT DEPT OF MATHEMATICS AND CENTER OF MATHEMATICAL SCIENCES & APPLICATIONS RANDOM MATRIX AND PROBABILITY THEORY SEMINAR 
Nina Holden (MIT) 
Percolationdecorated triangulations and their relation with SLE and LQG 

March 29, 2017, 3:00 pm at CMSA Building, 20 Garden St, G02 
DIFFERENTIAL GEOMETRY SEMINAR 
Jordan Keller (COLUMBIA UNIVERSITY) 
Linear stability of Schwarzschild spacetime 
