Previous Conferences & Workshops

Oct
12
2021

Computer Science/Discrete Mathematics Seminar II

Recent progress in query complexity I & II
10:30am|Simonyi Hall 101 and Remote Access

The query model is one of the most basic computational models.  In contrast to the Turing machine model, fundamental questions regarding the power of randomness and quantum computing are relatively well-understood.  For example, it is well-known...

Oct
11
2021

Joint IAS/Princeton University Symplectic Geometry Seminar

Tropical Lagrangian sections and Looijenga pairs
Andrew Hanlon
4:00pm|Fine Hall 314, Princeton University

We will discuss the first steps in an approach to proving homological mirror symmetry for Looijenga pairs through tropical Lagrangian sections. Namely, we will see how to construct these Lagrangian sections from tropical data corresponding to line...

Oct
11
2021

Members' Colloquium

What is the h-principle?
2:00pm|Simonyi Hall 101 and Remote Access

The honest answer to the question is that I actually do not know. I will therefore rather talk about several famous examples that are widely called "h-principle results" and try to explain some of the ideas behind the ones I am most familiar with.

Oct
11
2021

Computer Science/Discrete Mathematics Seminar I

The Complexity of Gradient Descent: CLS = PPAD ∩ PLS
Alexandros Hollender
11:15am|Simonyi Hall 101 and Remote Access

We consider the problem of computing a Gradient Descent solution of a continuously differentiable function f on a bounded convex domain, i.e., finding a "point where Gradient Descent terminates". Equivalently, this corresponds to computing a so...

Oct
08
2021

Joint IAS/Princeton/Montreal/Paris/Tel-Aviv Symplectic Geometry Zoominar

Three 20 minute research talks
Jean-Philippe Chassé, Leo Digiosia and Rima Chatterjee
9:15am|Remote Access
Jean-Philippe Chassé (UdeM)

Title:Convergence and Riemannian bounds on Lagrangian submanifolds

Abstract: Recent years have seen the appearance of a plethora of possible metrics on spaces of Lagrangian submanifolds. Indeed, on top of the better...

Oct
07
2021

Joint IAS/Princeton University Number Theory Seminar

Bounds for standard L-functions
4:30pm|Simonyi 101 and Remote Access

We consider the standard L-function attached to a cuspidal automorphic representation of a general linear group. We present a proof of a subconvex bound in the t-aspect. More generally, we address the spectral aspect in the case of uniform parameter...

Oct
06
2021

Arithmetic Groups

First order rigidity of high-rank arithmetic groups
11:00am|Simonyi 101 and Remote Access

The family of high-rank arithmetic groups is a class of groups playing an important role in various areas of mathematics.

It includes $\mathrm{SL}(n,\mathbb Z)$, for $n > 2$ , $\mathrm{SL}(n, \mathbb Z[1/p])$ for $n > 1$, their finite index...

Oct
05
2021

Hermann Weyl Lectures

Blow up for the energy super critical defocusing NLS
2:00pm|Simonyi Hall 101 and Remote Access - see Zoom link below

The defocusing Non Linear Schrödinger equation $iu_{t} = \Delta {u-u}|u|^{p-1}$ is a classical model of mathematical physics. For energy subcritical non linearities, Ginibre and Velo proved in the ’80s that all solutions are global in time and...