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Special Colloquium

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June 14, 2021      3:00 pm
Speaker: Michael Douglas - Harvard CMSA & Stony Brook University

Title: Topics in computers and mathematics Abstract: Advances in computation and machine learning are changing the way we do pure mathematics and theoretical physics. Using examples from differential geometry, finite group theory and...
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Special Colloquium

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June 8, 2021      3:00 pm
Speaker: Daniel Freed - University of Texas

Title: The two-dimensional Ising model revisited Abstract: I will describe joint work with Constantin Teleman, in which we cast topological eyes on a well-studied system in condensed matter physics.  In particular, we...
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Special Colloquium

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June 1, 2021      3:00 pm
Speaker: Sergei Gukov - Caltech

Title: From Ramanujan to Rokhlin, via quantum groups Abstract: In this talk, intended for a broad audience, I will describe recent work on new q-series invariants of 3-manifolds labeled by...
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Special Colloquium

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May 25, 2021      3:00 pm
Speaker: Lydia Bieri - University of Michigan

Title: New Structures in Gravitational Waves Abstract: Mathematical General Relativity (GR) explores the structures and resulting dynamics of gravitational systems. These are described by the Einstein equations, which can be written...
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On the cohomology of moduli of abelian varieties

HARVARD-MIT-BU-BRANDEIS-NORTHEASTERN

April 15, 2021      4:30 pm
Speaker: Melody Chan - Brown University

I’ll discuss recent work using tropical techniques to find new rational cohomology classes in moduli spaces A_g of abelian varieties, building on previous joint work with Galatius and Payne on M_g. I...
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Loop-erased random walk—a random fractal

HARVARD-MIT-BU-BRANDEIS-NORTHEASTERN

April 1, 2021      4:30 pm
Speaker: Greg Lawler - University of Chicago

Many models in equilibrium statistical physics produce random fractal curves “at criticality.”  I will discuss one particular model, the loop-erased random walk, which is closely related to uniform spanning trees...
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Special Colloquium

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March 22, 2021      3:00 pm
Speaker: Anna Gilbert - Yale University

Title: Metric representations: Algorithms and Geometry Abstract: Given a data set or a set of distances amongst data points, determining what combinatorial representation is most “consistent” with the input distances or...
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Special Colloquium

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March 16, 2021      3:00 pm
Speaker: Jian Ding - University of Pennsylvania, Wharton

Title: Recent progress on random field Ising model Abstract: Random field Ising model is a canonical example to study the effect of disorder on long range order. In 70's, Imry-Ma...
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Special Colloquium

COLLOQUIUMS

March 8, 2021      3:00 pm
Speaker: Melissa (Chiu-Chu) Liu - Columbia University

Title: Topological Recursion and Enumerative Geometry Abstract: Given a holomorphic curve in the complex 2-plane together with a suitably normalized symmetric meromorphic bilinear differential, the Chekhov-Eynard-Orantin Topological Recursion defines an infinite sequence of symmetric...
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Special Colloquium

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March 1, 2021      3:00 pm
Speaker: Ankur Moitra - MIT

Title: Robustness Meets Algorithms Abstract: Starting from the seminal works of Tukey (1960) and Huber (1964), the field of robust statistics asks: Are there estimators that probably work in the...
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