Previous Conferences & Workshops

Feb
22
2016

Computer Science/Discrete Mathematics Seminar I

The deterministic communication complexity of approximate fixed point
Omri Weinstein
11:15am|S-101

We study the two-party communication complexity of the geometric problem of finding an approximate Brouwer fixed-point of a composition of two Lipschitz functions $g \circ f$, where Alice knows $f$ and Bob knows $g$. We prove an essentially tight...

Feb
18
2016

Joint IAS/Princeton University Number Theory Seminar

Vanishing cycles and bilinear forms
Will Sawin
4:30pm|S-101

In joint work with Emmanuel Kowalski and Philippe Michel, we prove two different estimates on sums of coefficients of modular forms---one related to L-functions and another to the level of distribution. A key step in the argument is a careful...

Feb
18
2016

Joint IAS/Princeton University Symplectic Geometry Seminar

Spectral invariants for contactomorphisms of prequantization bundles and applications
Frol Zapolsky
10:30am|S-101

I'll outline the construction and computation of a Floer homology theory for contact manifolds which are prequantization spaces over monotone symplectic manifolds, and of the spectral invariants resulting therefrom, and present some applications...

Feb
17
2016

Mathematical Conversations

Quantum chaos and eigenvalue statistics
6:00pm|Dilworth Room

One of the outstanding insights obtained by physicists working on "Quantum Chaos" is a conjectural description of local statistics of the spectrum of the Laplacian on a Riemannian surface according to crude properties of the dynamics of the geodesic...

Feb
16
2016

Computer Science/Discrete Mathematics Seminar II

The singularity of symbolic matrices
10:30am|S-101

While this lecture is a continuation of the lecture from last Tuesday, I will make it self contained. The main object of study of this talk are matrices whose entries are linear forms in a set of formal variables (over some field). The main problem...

Feb
15
2016

Geometric Structures on 3-manifolds

Minimal surfaces in 3-manifold topology
Dan Ketover
4:00pm|S-101

Min-max theory developed in the 80s by Pitts (using earlier work of Almgren) allows one to construct closed embedded minimal surfaces in 3-manifolds in great generality. The main challenge is to understand the geometry of the limiting minimal...

Feb
15
2016

Members’ Seminar

No seminar today: Presidents Day
No seminar today: Presidents Day
2:00pm|S-101
Feb
12
2016

Augmentations and Legendrians at the IAS

A quantitative look at Lagrangian cobordisms
2:30pm|S-101

Lagrangian cobordisms between Legendrian submanifolds arise in Relative Symplectic Field Theory. In recent years, there has been much progress on answering qualitative questions such as: For a fixed pair of Legendrians, does there exist a Lagrangian...

Feb
12
2016

Augmentations and Legendrians at the IAS

A frontal view on Lefschetz fibrations II
Roger Casals
1:00pm|S-101

In this series of two talks we will discuss Weinstein structures endowed with a Lefschetz fibration in terms of the Legendrian front projection. The main focus is on Weinstein manifolds which admit a Weinstein Lefschetz fibration with an $A_k$-fibre...