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DTSTART;TZID=America/New_York:20260427T090000
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DTSTAMP:20260501T034217
CREATED:20250724T175158Z
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UID:10002832-1777280400-1777654800@www.math.harvard.edu
SUMMARY:CMSA Mathematics and Biology II: Mathematics and Science of Behavior
DESCRIPTION:Mathematics and Biology II: Mathematics and Science of Behavior\n\nApril 27\, 2026 @ 9:00 am – May 1\, 2026 @ 5:00 pm\n\n\n\nMathematics and Biology II: Mathematics and Science of Behavior \nDates: April 27 –May 1\, 2026 \nLocation: Harvard CMSA\, Room G10\, 20 Garden Street\, Cambridge MA \n\n\nThis meeting will explore the emerging mathematics and science of embodied cognition—the idea that behavior arises not solely from the brain but through the dynamic interaction of brain\, body\, and environment. Understanding how animals sense\, move\, decide\, and coordinate\, from individual sensorimotor loops to collective dynamics\, demands mathematical frameworks that integrate geometry\, dynamics\, stochastic processes\, control theory\, and multiscale physics. The meeting will bring together experimentalists studying behavior across species with theorists and engineers building mathematical models and bio-inspired machines\, to identify shared principles of adaptive behavior. \n\n\nCo-organizers: L. Mahadevan (Harvard)\, Francesco Mori (Harvard CMSA)\, Venkatesh Murthy (Harvard) \nDetails TBA \n\n\n\n\nSee the CMSA website for more details.
URL:https://www.math.harvard.edu/event/mathematics-and-biology-ii-cognition-neuroscience-psychology-and-geometry/
LOCATION:CMSA\, 20 Garden St\, G10\, 20 Garden Street\, Cambridge\, MA\, 02138\, United States
CATEGORIES:CMSA EVENTS
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BEGIN:VEVENT
DTSTART;TZID=America/New_York:20260501T100000
DTEND;TZID=America/New_York:20260501T102500
DTSTAMP:20260501T034217
CREATED:20260408T204141Z
LAST-MODIFIED:20260408T204141Z
UID:10003130-1777629600-1777631100@www.math.harvard.edu
SUMMARY:Special Lecture: Collusion in Auctions
DESCRIPTION:Auctions rely on competition among bidders to generate revenue for sellers. But in many real-world settings\, bidders collude\, working together to keep prices low. This raises a basic question: in the face of collusion\, which auction should the seller choose? In this talk\, I will present original work from my senior thesis addressing this question. Through analysis of some simple examples\, we will arrive at the central lesson\, which is that the strength of competition from non-colluding bidders plays a key role in determining which auction format is more favorable to the seller.
URL:https://www.math.harvard.edu/event/special-lecture-collusion-in-auctions/
LOCATION:Science Center 507\, 1 Oxford Street\, Cambridge\, MA\, 02138\, United States
CATEGORIES:SPECIAL LECTURE,OTHER MATHEMATICS DEPARTMENT EVENTS
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20260501T103000
DTEND;TZID=America/New_York:20260501T105500
DTSTAMP:20260501T034217
CREATED:20260414T194510Z
LAST-MODIFIED:20260415T172153Z
UID:10003140-1777631400-1777632900@www.math.harvard.edu
SUMMARY:Special Lecture: Crossing the cut:  Approximation on multiple Riemann sheets
DESCRIPTION:When a holomorphic function is analytically continued along two paths with the same endpoints\, there is no guarantee they arrive at the same value. The natural domain resolving this is a Riemann surface\, a multi-sheeted cover of the plane on which the function becomes single-valued\, but in which the function’s quantities of interest like zeros and poles end up residing on sheets beyond the principal one where data is available. Motivated by this setting\, this talk addresses whether an approximant built from sampled data on one sheet can serve as a proxy on multiple sheets simultaneously.
URL:https://www.math.harvard.edu/event/special-lecture-crossing-the-cut-approximation-on-multiple-riemann-sheets/
LOCATION:Science Center 507\, 1 Oxford Street\, Cambridge\, MA\, 02138\, United States
CATEGORIES:SPECIAL LECTURE,OTHER MATHEMATICS DEPARTMENT EVENTS
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20260501T120000
DTEND;TZID=America/New_York:20260501T130000
DTSTAMP:20260501T034217
CREATED:20260430T153922Z
LAST-MODIFIED:20260430T153922Z
UID:10003165-1777636800-1777640400@www.math.harvard.edu
SUMMARY:Lifting F-split surfaces to the Witt vectors
DESCRIPTION:Algebraic varieties in positive characteristic are ill behaved compared to characteristic zero ones. Several important tools available over the complex numbers\, such as the Hodge decomposition theorem\, are either not available or straight-away false. There are two important classes of positive characteristic varieties which have better behavior: Witt liftable varieties and Frobenius split varieties. A folklore conjecture predicts that the latter class is contained in the former. In a joint work with Bernasconi\, Kawakami and Witaszek we proved that this is the case for surfaces. I will give an overview of this result as well as some applications thereof. \n 
URL:https://www.math.harvard.edu/event/lifting-f-split-surfaces-to-the-witt-vectors/
LOCATION:CMSA\, 20 Garden St\, Common Room\, 20 Garden Street\, Cambridge\, 02138\, United States
CATEGORIES:CMSA MEMBER SEMINAR
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BEGIN:VEVENT
DTSTART;TZID=America/New_York:20260501T140000
DTEND;TZID=America/New_York:20260501T144500
DTSTAMP:20260501T034217
CREATED:20260402T173039Z
LAST-MODIFIED:20260402T173039Z
UID:10003121-1777644000-1777646700@www.math.harvard.edu
SUMMARY:Special Lecture: Permutations\, matrices\, and random growth
DESCRIPTION:Given a random permutation on $N$ letters\, how long is its longest increasing subsequence? Given a random Hermitian matrix with randomly distributed entries\, how large is the largest eigenvalue? Given a random game of “sticky” Tetris\, what does the configuration of tiles look like? Even though these three stories look very different than one another\, their answers are all somehow the same in some sense. In this talk\, we will look into a universal story that includes all three as special “cases”.
URL:https://www.math.harvard.edu/event/special-lecture-permutations-matrices-and-random-growth/
LOCATION:Science Center 507\, 1 Oxford Street\, Cambridge\, MA\, 02138\, United States
CATEGORIES:SPECIAL LECTURE,OTHER MATHEMATICS DEPARTMENT EVENTS
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20260501T150000
DTEND;TZID=America/New_York:20260501T154500
DTSTAMP:20260501T034217
CREATED:20260413T141358Z
LAST-MODIFIED:20260420T205805Z
UID:10003136-1777647600-1777650300@www.math.harvard.edu
SUMMARY:Special Lecture: How many times does a polynomial vanish at a point?
DESCRIPTION:We learn in school how to attach a multiplicity to a root of a polynomial in one variable. For polynomials in two or more variables the question becomes more subtle and interesting. After reviewing the most direct extension of the one-variable definition\, I will discuss a more delicate invariant that has become important in recent years. The talk will be pictorial and non-technical.
URL:https://www.math.harvard.edu/event/special-lecture-how-many-times-does-a-polynomial-vanish-at-a-point/
LOCATION:Science Center 507\, 1 Oxford Street\, Cambridge\, MA\, 02138\, United States
CATEGORIES:SPECIAL LECTURE,OTHER MATHEMATICS DEPARTMENT EVENTS
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20260501T153000
DTEND;TZID=UTC:20260501T163000
DTSTAMP:20260501T034217
CREATED:20260423T144801Z
LAST-MODIFIED:20260423T144801Z
UID:10003158-1777649400-1777653000@www.math.harvard.edu
SUMMARY:Higgs bundles\, isomonodromic leaves\, and minimal surfaces
DESCRIPTION:**Please note special location** \nI will discuss various aspects of the geometry of the joint moduli space and nonabelian Hodge correspondence for Higgs bundles on Riemann surfaces with varying complex structures. Specifically\, there are four objects that are related in a surprising way: the isomonodromic distribution\, the degeneracy of the hermitian pairing arising from the Atiyah-Bott-Goldman form\, the “Kodaira-Spencer” form\, and the energy functional for equivariant harmonic maps. I will show how this leads to the existence of pseudo-Kaehler metrics for certain moduli spaces of minimal surfaces\, recovering and extending several recent constructions of various authors. This work is part of a collaboration with Brian Collier and Jeremy Toulisse. \n 
URL:https://www.math.harvard.edu/event/higgs-bundles-isomonodromic-leaves-and-minimal-surfaces/
LOCATION:Science Center B10\, 1 Oxford St\, Cambridge\, MA\, 02138\, United States
CATEGORIES:GAUGE THEORY AND TOPOLOGY
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