Previous Conferences & Workshops

Dec
06
2017

Analysis Seminar

Spectral gaps without frustration
Marius Lemm
2:00pm|S-101

In spin systems, the existence of a spectral gap has far-reaching consequences. So-called "frustration-free" spin systems form a subclass that is special enough to make the spectral gap problem amenable and, at the same time, broad enough to include...

Dec
05
2017

Joint IAS/Princeton University Number Theory Seminar

Automorphy for coherent cohomology of Shimura varieties
Jun Su
4:45pm|S-101

We consider the coherent cohomology of toroidal compactifications of Shimura varieties with coefficients in the canonical extensions of automorphic vector bundles and show that they can be computed as relative Lie algebra cohomology of automorphic...

Dec
05
2017

Locally Symmetric Spaces Seminar

Motivic correlators and locally symmetric spaces IV
1:45pm|S-101

According to Langlands, pure motives are related to a certain class of automorphic representations.Can one see mixed motives in the automorphic set-up? For examples, can one see periods of mixed motives in entirely automorphic terms? The goal of...

Dec
05
2017

Computer Science/Discrete Mathematics Seminar II

Short proofs are hard to find (joint work w/ Toni Pitassi and Hao Wei)
Ian Mertz
10:30am|S-101

Proof complexity studies the problem computer scientists and mathematicians face every day: given a statement, how can we prove it? A natural and well-studied question in proof complexity is to find upper and lower bounds on the length of the...

Dec
04
2017

Joint IAS/Princeton University Number Theory Seminar

Torsion for abelian varieties of type III and new cases of the Mumford-Tate conjecture
Victoria Cantoral Farfan
4:30pm|Fine 314, Princeton University

Let $A$ be an abelian variety over a number field $K$. The number of torsion points defined over a finite extension $L$ is bounded polynomially in terms of the degree $[L:K]$. We compute the optimal exponent for this bound, in terms of the dimension...

Dec
04
2017

Joint IAS/Princeton University Symplectic Geometry Seminar

Open Gromov-Witten theory of $(mathbb{CP}^1,mathbb{RP}^1)$ in all genera and Gromov-Witten Hurwitz correspondence
Amitai Zernik
4:00pm|S-101

In joint work with Buryak, Pandharipande and Tessler (in preparation), we define equivariant stationary descendent integrals on the moduli of stable maps from surfaces with boundary to $(\mathbb{CP}^1,\mathbb{RP}^1)$. For stable maps of the disk...

Dec
04
2017

Members’ Seminar

Algebraic combinatorics: applications to statistical mechanics and complexity theory
2:00pm|S-101

We will give a brief overview of the classical topics, problems and results in Algebraic Combinatorics. Emerging from the representation theory of $S_n$ and $GL_n$, they took a life on their own via the theory of symmetric functions and Young...

Dec
04
2017

Computer Science/Discrete Mathematics Seminar I

General strong polarization
Madhu Sudan
11:00am|S-101

A martingale is a sequence of random variables that maintain their future expected value conditioned on the past. A $[0,1]$-bounded martingale is said to polarize if it converges in the limit to either $0$ or $1$ with probability $1$. A martingale...

Nov
30
2017

Joint IAS/Princeton University Number Theory Seminar

Locally symmetric spaces: $p$-adic aspects
4:30pm|S-101

$p$-adic period spaces have been introduced by Rapoport and Zink as a generalization of Drinfeld upper half spaces and Lubin-Tate spaces. Those are open subsets of a rigid analytic $p$-adic flag manifold. An approximation of this open subset is the...