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BEGIN:VEVENT
DTSTART;TZID=America/New_York:20261029T153000
DTEND;TZID=America/New_York:20261029T173000
DTSTAMP:20261028T131102Z
CREATED:20261021T172824Z
LAST-MODIFIED:20261028T131102Z
UID:10003278-1793287800-1793295000@www.math.harvard.edu
SUMMARY:Thursday Seminar: Stefanich Rings II
DESCRIPTION:Speaker:  Linus Hamman\nTitle: Stefanich Rings II\nTime:  Thursday\, Oct 29th\, 3:30-5:30pm\nPlace:  Harvard SC 507
URL:https://www.math.harvard.edu/event/stefanich-rings-ii/
LOCATION:Science Center 507\, 1 Oxford Street\, Cambridge\, MA\, 02138\, United States
CATEGORIES:THURSDAY SEMINAR
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20261029T160000
DTEND;TZID=America/New_York:20261029T180000
DTSTAMP:20261026T132237Z
CREATED:20261026T132033Z
LAST-MODIFIED:20261026T132237Z
UID:10003283-1793289600-1793296800@www.math.harvard.edu
SUMMARY:Algebraic Dynamics seminar: p-adic Siegel disks on K3 surfaces
DESCRIPTION:McMullen constructed automorphisms of complex K3 surfaces with positive entropy—and thus chaotic dynamics on a large set—that nonetheless have a Siegel disk: an open region on which the automorphism is holomorphically conjugate to an irrational rotation. Strikingly\, such an automorphism forces the K3 surface to be non-projective\, so McMullen’s examples cannot be written down using explicit equations. Instead they are obtained indirectly via the global Torelli theorem.  In this talk we construct a p-adic analogue: a positive cohomological-entropy automorphism with a Siegel disk on a non-projective rigid-analytic K3 surface over a p-adic field. Our construction produces the surface directly using mod p geometry\, without access to a Torelli theorem\, which gives considerably more flexibility than in the complex case.\n\n\n\nhttp://people.math.harvard.edu/~demarco/AlgebraicDynamics/\nfor more information
URL:https://www.math.harvard.edu/event/p-adic-siegel-disks-on-k3-surfaces/
LOCATION:Science Center 232
CATEGORIES:ALGEBRAIC DYNAMICS
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20261029T163000
DTEND;TZID=America/New_York:20261029T173000
DTSTAMP:20261026T154153Z
CREATED:20261026T154153Z
LAST-MODIFIED:20261026T154153Z
UID:10003286-1793291400-1793295000@www.math.harvard.edu
SUMMARY:CMSA Geometry and Mathematical Physics Seminar: Worldsheets\, baby universes\, and asymptotic representation theory
DESCRIPTION:The string worldsheet can be reinterpreted as a baby universe field theory\, a formalism first introduced by Coleman\, Giddings and Strominger and more recently revived by Marolf and Maxfield to deal with third quantization in quantum gravity. In this talk\, I will discuss this reinterpretation in the context of a particularly simple string worldsheet\, and connect it to foundational results in asymptotic representation theory. \n 
URL:https://www.math.harvard.edu/event/worldsheets-baby-universes-and-asymptotic-representation-theory/
LOCATION:CMSA\, 20 Garden St\, G10\, 20 Garden Street\, Cambridge\, MA\, 02138\, United States
CATEGORIES:CMSA GEOMETRY AND MATHEMATICAL PHYSICS SEMINAR,CMSA EVENTS
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20261030T120000
DTEND;TZID=America/New_York:20261030T130000
DTSTAMP:20261023T125209Z
CREATED:20261023T125209Z
LAST-MODIFIED:20261023T125209Z
UID:10003281-1793361600-1793365200@www.math.harvard.edu
SUMMARY:CMSA Member Seminar: Poincaré Duality in Quantum Error-Correcting Codes
DESCRIPTION:Quantum information is fragile\, and one of the main tools for protecting it is a family of error-correcting codes called stabilizer codes. These codes have a second life as exactly solvable models of quantum matter: the code space is the vacuum state and the “syndromes” behave like excitations that can move freely\, get stuck in place\, or wind around one another. I will show how a little homological algebra packages these excitations into clean mathematical objects\, which we call charge modules. Moreover\, there are natural pairing between different charge modules of complementary degrees sometimes called “braiding”. They actually came from the Poincare duality of the sphere. This is joint work with Błażej Ruba. \nLunch will be provided.
URL:https://www.math.harvard.edu/event/poincare-duality-in-quantum-error-correcting-codes/
LOCATION:CMSA\, 20 Garden St\, Common Room\, 20 Garden Street\, Cambridge\, 02138\, United States
CATEGORIES:CMSA MEMBER SEMINAR
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20261031T090000
DTEND;TZID=America/New_York:20261031T170000
DTSTAMP:20261015T181338Z
CREATED:20261015T181045Z
LAST-MODIFIED:20261015T181338Z
UID:10003271-1793437200-1793466000@www.math.harvard.edu
SUMMARY:Doing Mathematics with AI Agents
DESCRIPTION:Click here for additional event information.
URL:https://www.math.harvard.edu/event/doing-mathematics-with-ai-agents-october/
LOCATION:Harvard Science Center
CATEGORIES:AI for the working mathematician,CMSA EVENTS
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20261102T150000
DTEND;TZID=America/New_York:20261102T160000
DTSTAMP:20261026T194546Z
CREATED:20261026T194546Z
LAST-MODIFIED:20261026T194546Z
UID:10003287-1793631600-1793635200@www.math.harvard.edu
SUMMARY:Richard P. Stanley Seminar in Combinatorics: Random graphs: The extreme tail
DESCRIPTION:Since their inception\, random graphs have been a central topic in probability and combinatorics\, offering a remarkably rich landscape for studying how complex structures emerge from randomness. We will discuss the following fundamental questions: What is the probability that the random graph fails to contain certain structures? For instance\, what is the probability that the random graph is triangle-free? \nStudying different regimes of such containment probability leads to the heart of different subjects with rich understanding and fundamental phenomena. While the study of thresholds occupies the typical regime of the containment probability\, understanding precise asymptotics in the extreme tail is a central topic in the study of large deviations. I will discuss recent progress in this regime in joint work with Matthew Kwan\, and describe connections with other developments in modern combinatorics and probability. \n\nFor information about the Richard P. Stanley Seminar in Combinatorics\, visit… https://math.mit.edu/combin/
URL:https://www.math.harvard.edu/event/random-graphs-the-extreme-tail/
LOCATION:MIT Room 2-143
CATEGORIES:RICHARD P. STANLEY SEMINAR IN COMBINATORICS,HARVARD-MIT COMBINATORICS
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20261102T163000
DTEND;TZID=America/New_York:20261102T173000
DTSTAMP:20261021T173155Z
CREATED:20261021T173155Z
LAST-MODIFIED:20261021T173155Z
UID:10003279-1793637000-1793640600@www.math.harvard.edu
SUMMARY:CMSA Colloquium: Extreme Diffusion
DESCRIPTION:Two hundred years ago\, Robert Brown observed the statistics of the motion of grains of pollen in water. It took almost one hundred years for Einstein and others to develop an effective theory describing this motion as that of a random walker. In this talk\, I will challenge a key implication of this well established theory. When studying systems with very large numbers of particles diffusing together\, I will argue that the Einstein random walk theory breaks down when it comes to predicting the statistical behavior of extreme particles—those that move the fastest and furthest in the system. In its place\, I will describe a new theory of extreme diffusion which captures the effect of the hidden environment in which particles diffuse together and allows us to interrogate that environment by studying extreme particles. I will highlight one piece of mathematics that led us to develop this theory—a non-commutative binomial theorem—and hint at other connections to integrable probability\, quantum integrable systems and stochastic PDEs.
URL:https://www.math.harvard.edu/event/extreme-diffusion/
LOCATION:CMSA\, 20 Garden St\, G10\, 20 Garden Street\, Cambridge\, MA\, 02138\, United States
CATEGORIES:CMSA COLLOQUIUM
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20261105T150000
DTEND;TZID=UTC:20261105T160000
DTSTAMP:20261013T125543Z
CREATED:20261013T125543Z
LAST-MODIFIED:20261013T125543Z
UID:10003261-1793890800-1793894400@www.math.harvard.edu
SUMMARY:Introductory Math Seminar: Some Thoughts on Teaching: Why Physics Matters for the Integral Theorems of Vector Calculus
DESCRIPTION:Vector calculus came into being in the 19th century alongside fundamental developments in physics\, especially electromagnetism. It is in the context of electromagnetism that the integral theorems\, in particular\, find their clearest meaning and purpose. Trying to remove physics talk from pedagogy in vector calculus might seem like a good way to reduce the cognitive load on students\, but\, in this talk\, I will argue that this approach ends up being counterproductive. I will instead argue that instruction on the integral theorems of vector calculus should involve concepts from electromagnetism at every step.
URL:https://www.math.harvard.edu/event/some-thoughts-on-teaching-why-physics-matters-for-the-integral-theorems-of-vector-calculus/
LOCATION:Science Center 232
CATEGORIES:OTHER MATHEMATICS DEPARTMENT EVENTS
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20261106T090000
DTEND;TZID=UTC:20261107T170000
DTSTAMP:20260604T181542Z
CREATED:20260604T181529Z
LAST-MODIFIED:20260604T181542Z
UID:10003183-1793955600-1794070800@www.math.harvard.edu
SUMMARY:CMSA Northeast Conference on Categorical Methods
DESCRIPTION:Northeast Conference on Categorical Methods\n\nNovember 6\, 2026 @ 9:00 am – November 7\, 2026 @ 5:00 pm\n\n\n\nNortheast Conference on Categorical Methods \nDates: November 6–​7\, 2026  \nLocation: CMSA G10\, 20 Garden St.\, Cambridge MA 02138 \n\n\n\n\nThis conference is intended to bring together researchers in all areas of mathematics and mathematical physics whose work involves the use of methods from categorical algebra\, abstract homotopy theory\, and higher category theory. Our goal is to showcase new\, exciting research and offer an avenue for researchers from the Northeast US to discuss their work and collaborate with people in this ever-growing community. \nOrganized by Dan Freed\, Harvard Math & CMSA; Owen Gwilliam\, UMass Amherst; and Lorenzo Riva\, Harvard CMSA \n\n\n\n\n\n\nSee CMSA event webpage for more details.
URL:https://www.math.harvard.edu/event/cmsa-northeast-conference-on-categorical-methods/
LOCATION:CMSA\, 20 Garden St\, G10\, 20 Garden Street\, Cambridge\, MA\, 02138\, United States
CATEGORIES:CMSA EVENTS
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20261106T153000
DTEND;TZID=America/New_York:20261106T163000
DTSTAMP:20261028T135238Z
CREATED:20261028T135238Z
LAST-MODIFIED:20261028T135238Z
UID:10003291-1793979000-1793982600@www.math.harvard.edu
SUMMARY:Gauge Theory and Topology Seminar: Recent progress in 4-dimensional Ricci flow and potential applications to topology
DESCRIPTION:The Ricci flow (with surgery or through singularities) has proven to be a powerful tool in the study of 3-dimensional topology\, its most prominent application being the verification of the Poincaré and Geometrization Conjectures by Perelman. Recent developments suggest that a theory of Ricci flow through singularities in dimension 4 is now within reach. The approach draws on a new compactness and partial regularity theory for Ricci flow\, a degree theory for expanding solitons developed jointly with Eric Chen\, and the resolution of the mean convex neighborhood conjecture for mean curvature flow in joint work with Yi Lai. Together\, these results provide tools for understanding and resolving conical and cylindrical singularities and point toward a construction of a 4-dimensional flow through singularities. I will begin with a brief overview of Ricci flow in dimension 3 and explain the geometric intuition behind the expected 4-dimensional picture. I will describe the tools that are already available\, how they fit into the proposed construction\, and the remaining problems and possible approaches to them. Finally\, I will discuss potential topological applications and further analysis of the flow\, including ways of obtaining stronger geometric control\, that may reveal new connections between 4-dimensional topology and geometric analysis.
URL:https://www.math.harvard.edu/event/recent-progress-in-4-dimensional-ricci-flow-and-potential-applications-to-topology/
LOCATION:Science Center 507\, 1 Oxford Street\, Cambridge\, MA\, 02138\, United States
CATEGORIES:GAUGE THEORY AND TOPOLOGY
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20261109T150000
DTEND;TZID=America/New_York:20261109T160000
DTSTAMP:20261019T184925Z
CREATED:20260915T192300Z
LAST-MODIFIED:20261019T184925Z
UID:10003218-1794236400-1794240000@www.math.harvard.edu
SUMMARY:Jameel Al-Aidroos Mathematical Pedagogy Lecture Series 2026
DESCRIPTION:Join us for the fifth annual Jameel Al-Aidroos Mathematical Pedagogy Lecture Series. \nWhat types of knowledge are used in different types of university mathematics teaching?\nAmple evidence from education research shows that when someone is teaching mathematics\, they are making use of their knowledge of mathematics content plus many other types of teaching-related knowledge. There are a variety of ways that mathematics is taught to university students including interactive lecture and inquiry-based approaches. In this session we will explore connections between those particular teaching practices and the knowledge needed to use them by viewing video recordings of instructors in undergraduate mathematics classrooms. Findings from research on mathematical knowledge for teaching and implications for instructor professional development will also be discussed. \nRegister Here\n  \nNatasha Speer graduated in 1989 with a bachelor’s degree in mathematics\, and in 1990 with a master’s degree in mathematics education from Cornell University in Ithaca\, NY. In 2001\, she received her Ph.D. in Education in Mathematics\, Science\, and Technology at the University of California at Berkeley. She is currently working on video cases for novice college mathematics instructor professional development and the project “On The Job Learning: Graduate Student Instructors’ Development of Knowledge for Teaching\,” which seeks to study newly formed teaching-related knowledge in novice college physics instructors. In her research\, Natasha examines the influence that mathematical knowledge for teaching has on college mathematics instructors’ teaching practices. \nOrganized by Brendan Kelly | Harvard Department of Mathematics Senior Preceptor\, Director of Introductory Mathematics \nThis speaker series is a small way to remember Jameel Al-Aidroos\, his extraordinary warmth of character and pedagogical skills\, and his contributions and dedication to teaching and learning at Harvard. He motivated and inspired his students and colleagues; through this series\, we hope to celebrate and keep alive that legacy by bringing speakers who share new perspectives on mathematics and pedagogy\, and motivate us to reflect on our professional roles.
URL:https://www.math.harvard.edu/event/jameel-al-aidroos-mathematical-pedagogy-lecture-series-2026/
LOCATION:Science Center 119\, 1 Oxford St\, Cambridge\, MA\, 02138\, United States
CATEGORIES:ANNOUNCEMENTS,JAMEEL AL-AIDROOS MATHEMATICAL PEDAGOGY LECTURE SERIES
ATTACH;FMTTYPE=image/png:https://www.math.harvard.edu/wp-content/uploads/Jameel-Al-Aidroos-Lecture-Series-2026-Poster.png
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20261116T163000
DTEND;TZID=America/New_York:20261116T173000
DTSTAMP:20261001T165534Z
CREATED:20261001T165534Z
LAST-MODIFIED:20261001T165534Z
UID:10003247-1794846600-1794850200@www.math.harvard.edu
SUMMARY:CMSA Colloquium: Snake graphs and q-deformed real numbers
DESCRIPTION:I’ll present a statistical-mechanical construction of q-deformed real numbers [[x]]_q\, inspired by the q-deformed rational numbers [x]_q of Morier-Genoud and Ovsienko. The new construction admits two equivalent formulations: one in terms of random filters in snake posets and the other in terms of random dimer covers of snake graphs.\n\nI’ll begin with a combinatorial approach to Stern’s diatomic series and the Calkin–Wilf bijection via finite snake graphs\, and then construct q-deformed rational numbers by introducing an activity parameter q into the model. I extend from q-deformed rationals to q-deformed reals by passing from finite to infinite snake graphs; the main technical step is to show that the associated limiting probability measures are well defined. \n\nThe resulting q-deformation [[x]]_q satisfies [[x]]_1 = x for all x>0. There’s evidence that\, wherever both [x]_q and [[x]]_q are defined\, [[x]]_q = q  [x]_q. For more details\, see arXiv:2607.14332.\n\n\n\n 
URL:https://www.math.harvard.edu/event/snake-graphs-and-q-deformed-real-numbers/
LOCATION:CMSA\, 20 Garden St\, G10\, 20 Garden Street\, Cambridge\, MA\, 02138\, United States
CATEGORIES:CMSA COLLOQUIUM
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20261119
DTEND;VALUE=DATE:20261121
DTSTAMP:20261019T190157Z
CREATED:20260316T143644Z
LAST-MODIFIED:20261019T190157Z
UID:10003091-1795046400-1795219199@www.math.harvard.edu
SUMMARY:Current Developments in Mathematics 2026
DESCRIPTION:Register to Attend\nOrganizers: Denis Auroux (Harvard)\, David Jerison (MIT)\, Mark Kisin (Harvard)\, Nike Sun (MIT)\, Lauren Williams (Harvard). \nSponsored by the National Science Foundation (pending)\, Harvard University Department of Mathematics\, and the Massachusetts Institute of Technology. \nLimited funding to help defray travel expenses is available for graduate students and recent PhDs. If you are a graduate student or postdoc and would like to apply for support\, please register above and send an email to cdm@math.harvard.edu. Please include your name\, address\, current status\, university affiliation\, citizenship\, and area of study. F1 visa holders are eligible to apply for support. If you are a graduate student\, please send a brief letter of recommendation from a faculty member to explain the relevance of the conference to your studies or research. \nHarvard University is committed to maintaining a safe and healthy educational and work environment in which no member of the University community is\, on the basis of sex\, sexual orientation\, or gender identity\, excluded from participation in\, denied the benefits of\, or subjected to discrimination in any University program or activity. More information can be found here.
URL:https://www.math.harvard.edu/event/current-developments-in-mathematics-2026/
LOCATION:Science Center Hall A\, 1 Oxford Street\, Cambridge\, MA\, 02138\, United States
CATEGORIES:CURRENT DEVELOPMENTS IN MATHEMATICS,ANNOUNCEMENTS,CONFERENCES
ATTACH;FMTTYPE=image/png:https://www.math.harvard.edu/wp-content/uploads/CDM-2026-Poster-92.png
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20261121T090000
DTEND;TZID=America/New_York:20261121T170000
DTSTAMP:20261015T181256Z
CREATED:20261015T181241Z
LAST-MODIFIED:20261015T181256Z
UID:10003272-1795251600-1795280400@www.math.harvard.edu
SUMMARY:Doing Mathematics with AI Agents
DESCRIPTION:Click here for more information and to apply.
URL:https://www.math.harvard.edu/event/doing-mathematics-with-ai-agents-november/
LOCATION:Harvard Science Center
CATEGORIES:AI for the working mathematician,CMSA EVENTS
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20270315
DTEND;VALUE=DATE:20270320
DTSTAMP:20261019T152010Z
CREATED:20260320T161031Z
LAST-MODIFIED:20261019T152010Z
UID:10003096-1805068800-1805500799@www.math.harvard.edu
SUMMARY:Number Theory and Representation Theory: The Legacy of Benedict Gross\, and Beyond
DESCRIPTION:Dick Gross (June 22\, 1950 – December 19\, 2025) made groundbreaking contributions in domains such as number theory and representation theory\, and spent nearly five decades at Harvard as a student\, math professor\, and academic leader. This conference is a remembrance of his life with lectures related to his work and recollections from colleagues\, family and friends. \nRead more about Dick Gross’ life and contributions here. \nRegister\n  \n\nSPEAKERS*\nJennifer Balakrishnan\, Boston University\nManjul Bhargava\, Princeton University\nJoe Buhler\, Reed College\nSamit Dasgupta\, Duke University\nNoam Elkies\, Harvard University\nJessica Fintzen\, Universität Bonn\, Germany\nWee Teck Gan\, National University of Singapore\, Singapore\nJoe Harris\, Harvard University\nMike Hopkins\, Harvard University\nBarry Mazur\, Harvard University\nCurtis McMullen\, Harvard University\nAaron Pollack\, UC San Diego\nDipendra Prasad\, Indian Institute of Technology Bombay\, India\nGordan Savin\, University of Utah\nNaomi Sweeting\, MIT\nMarie-France Vigneras\, Institut de Mathématiques de Jussieu Paris\, France\nNolan Wallach\, UC San Diego\nDon Zagier\, Max Planck Institute for Mathematics\, Bonn\, Germany\nShou-Wu Zhang\, Princeton University\n\n*List of speakers subject to change. \nOrganizers: Henri Darmon (McGill)\, Joe Harris (Harvard)\, Kiran Kedlaya (UC San Diego)\, Cristian Popescu (UC San Diego) \nAccommodations: For hotels in very close proximity to the Harvard campus (easy walking distance)\, we recommend the Sheraton Commander Hotel\, the Harvard Square Hotel\, the Irving House at Harvard\, and the Hotel Veritas. A little further away in Porter Square (one subway stop from Harvard Square)\, we recommend the Porter Square Hotel and the Hotel 1868.
URL:https://www.math.harvard.edu/event/benedict-gross-conference/
LOCATION:Harvard Science Center
CATEGORIES:CONFERENCES
ATTACH;FMTTYPE=image/png:https://www.math.harvard.edu/wp-content/uploads/Gross-Confernce-Poster.png
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