Previous Conferences & Workshops

Feb
27
2018

Joint IAS/Princeton University Number Theory Seminar

Concentration properties of theta lifts
4:45pm|Simonyi Hall 101

The classical conjectures of Ramanujan-Petersson and Sato-Tate on the Fourier coefficients of modular forms, or more generally on the Satake parameters of automorphic representations, are highly sensitive to questions of functoriality. For example...

Feb
27
2018

Locally Symmetric Spaces Seminar

Local to global relations of periods (continued)
Erez Lapid
1:45pm|Simonyi Hall 101

Rankin-Selberg integrals provide factorization of certain period integrals into local counterparts. Other, more elusive, periods can be studied in principle by the relative trace formula and other methods.

Following Waldspurger, Ichino-Ikeda...

Feb
27
2018

Computer Science/Discrete Mathematics Seminar II

On the Communication Complexity of Classification Problems
Roi Livni
10:30am|Simonyi Hall 101

We will discuss a model of distributed learning in the spirit of Yao's communication complexity model. We consider a two-party setting, where each of the players gets a list of labelled examples and they communicate in order to jointly perform a...

Feb
27
2018

Locally Symmetric Spaces Seminar

Invariant differential operators on spherical varieties (continued)
Jonathan Wang
10:00am|Dilworth Room

I will discuss Knop's paper generalizing Harish-Chandra's isomorphism for the center of the universal enveloping algebra to the setting of spherical varieties. Here the center is replaced by the algebra of invariant differential operators. The idea...

Feb
26
2018

Joint IAS/Princeton University Symplectic Geometry Seminar

Chain level loop bracket and pseudo-holomorphic disks
Kei Irie
4:00pm|Simonyi Hall 101

Let $L$ be a Lagrangian submanifold in a symplectic vector space which is closed, oriented and spin. Using virtual fundamental chains of moduli spaces of nonconstant pseudo-holomorphic disks with boundaries on $L$, one can define a Maurer-Cartan...

Feb
26
2018

Members’ Seminar

Representations of $p$-adic groups
2:00pm|Simonyi Hall 101

I will survey what is known about the construction of (the building blocks of) representations of p-adic groups, mention recent developments, and explain some of the concepts underlying all constructions. In particular, I will introduce filtrations...

Feb
26
2018

Computer Science/Discrete Mathematics Seminar I

A Tight Bound for Hypergraph Regularity
11:00am|Simonyi Hall 101

The hypergraph regularity lemma — the extension of Szemeredi's graph regularity lemma to the setting of k-graphs — is one of the most celebrated combinatorial results obtained in the past decade. By now there are various (very different) proofs of...

Feb
22
2018

Theoretical Machine Learning Seminar

On the Optimization of Deep Networks: Implicit Acceleration by Overparameterization
12:15pm|White-Levy Room

Conventional wisdom in deep learning states that increasing depth improves expressiveness but complicates optimization. In this talk I will argue that, sometimes, increasing depth can speed up optimization.

The effect of depth on optimization is...