Previous Conferences & Workshops

Feb
14
2018

Analysis Seminar

On the long-term dynamics of nonlinear dispersive evolution equations
2:00pm|Simonyi Hall 101

We will give an overview of some of the developments in recent years dealing with the description of asymptotic states of solutions to semilinear evolution equations ("soliton resolution conjecture").

New results will be presented on damped...

Feb
13
2018

Joint IAS/Princeton University Number Theory Seminar

Abstract homomorphisms of algebraic groups and applications
Igor Rapinchuk
4:45pm|Simonyi Hall 101

I will discuss several results on abstract homomorphisms between the groups of rational points of algebraic groups. The main focus will be on a conjecture of Borel and Tits formulated in their landmark 1973 paper.

Our results settle this conjecture...

Feb
13
2018

Locally Symmetric Spaces Seminar

The Ngô action via geometric Satake
David Ben Zvi
1:45pm|Simonyi Hall 101

I will explain an application of the geometric Satake correspondence (in its derived form due to Bezrukavnikov-Finkelberg) to the study of differential operators on $G$-spaces (for $G$ complex reductive) and its classical version, the study of...

Feb
13
2018

Locally Symmetric Spaces Seminar

Moment map for spherical varieties (after F. Knop)
Michał Zydor/Yiannis Sakellaridis
10:00am|Dilworth Room

Conclusion of last week's talk (Michał); overview of where we are and discussion of relation with representation theory and L-functions (Yiannis).

Feb
12
2018

Joint IAS/Princeton University Symplectic Geometry Seminar

Critical toric surfaces and applications
Weiwei Wu
4:00pm|Fine Hall 322, Princeton University

We introduce the notion of critical toric surfaces, with a focus on the so-call "critical toric blow-ups". These are symplectic manifolds with a toric action on the complement of an isotropic Lagrangian skeleton. We explain some applications of this...

Feb
12
2018

Members’ Seminar

Cocycles, Lyapunov exponents, localization
2:00pm|Simonyi Hall 101

This talk will be an introduction to the methods used in the study of spectral properties of Schroedinger operators with a potential defined via the action of an ergodic transformation. Open problems relating to Lyapunov exponents over a skew shift...

Feb
12
2018

Computer Science/Discrete Mathematics Seminar I

Nonlinear dimensionality reduction for faster kernel methods in machine learning.
Christopher Musco
11:00am|Simonyi Hall 101

The Random Fourier Features (RFF) method (Rahimi, Recht, NIPS 2007) is one of the most practically successful techniques for accelerating computationally expensive nonlinear kernel learning methods. By quickly computing a low-rank approximation for...

Feb
08
2018

Joint IAS/Princeton University Number Theory Seminar

The Galois action on the stable homology of symplectic groups over Z.
4:30pm|Fine 214, Princeton University

The Galois group of Q acts on the homology of the complex moduli space of abelian varieties, or, equivalently, on the homology of symplectic groups Sp_{2g}(Z). (Here we take homology with finite or profinite coefficients.) In particular, the Galois...