Previous Conferences & Workshops

Jan
09
2019

Mathematics Seminar

Distribution of the integral points on quadrics
2:00pm|Simonyi Hall 101

Motivated by questions in computer science, we consider the problem of approximating local points (real or p-adic points) on the unit sphere S^d optimally by the projection of the integral points lying on R*S^d, where R^2 is an integer. We present...

Dec
18
2018

Symplectic Dynamics Working Group

Celestial Mechanics and Holomorphic Curves II
Umberto Hryniewicz
1:30pm|Simonyi Hall Classroom 114

I would like to discuss three topics concerning applications of holomorphic curve methods to the planar circular restricted three-body problem. The first is the existence of direct orbits and a conjecture due to Birkhoff. The second is the use of...

Dec
18
2018

Variational Methods in Geometry Seminar

Bounds in Renormalized Volume for Hyperbolic 3-manifolds
Franco Vargas Pallete
1:00pm|Simonyi Hall 101

Renormalized volume (and more generally W-volume) is a geometric quantity found by volume regularization. In this talk I'll describe its properties for hyperbolic 3-manifolds, as well as discuss techniques to prove optimality results.

Dec
17
2018

Symplectic Dynamics/Geometry Seminar

Barcodes and $C^0$ symplectic topology
3:30pm|Simonyi Hall 101

Hamiltonian homeomorphisms are those homeomorphisms of a symplectic manifold which can be written as uniform limits of Hamiltonian diffeomorphisms. One difficulty in studying Hamiltonian homeomorphisms (particularly in dimensions greater than two)...

Dec
14
2018

Analysis Seminar

Two questions of Landis and their applications
4:30pm|Simonyi Hall 101

We discuss two old questions of Landis concerning behavior of solutions of second order elliptic equations. The first one is on propagation of smallness for solutions from sets of positive measure, we answer this question and as a corollary prove an...

Dec
13
2018

Joint IAS/Princeton University Number Theory Seminar

Nearby cycles over general bases and duality
Weizhe Zheng
4:30pm|Fine Hall 214

Over one-dimensional bases, Gabber and Beilinson proved theorems on the commutation of the nearby cycle functor and the vanishing cycle functor with duality. In this talk, I will explain a way to unify the two theorems, confirming a prediction of...