Previous Conferences & Workshops

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...

Dec
12
2018

Mathematical Conversations

How to detect a projective space?
6:00pm|Dilworth Room

In 1984, Robert Lazarsfeld solved an old conjecture of Remmert and Van de Ven, which stated that there are no non-trivial complex manifolds that can be covered by a projective space. His result was a consequence of Shigefumi Mori's breakthrough...

Dec
12
2018

Informal Group Action Seminar

Non-accumulation of periodic torus orbits
2:00pm|Simonyi Hall 101

The "linearization" technique is a powerful method in homogeneous dynamics to control the time a unipotent orbit spends in the vicinity of a closed homogeneous subset. This method relies on the polynomial nature of a unipotent flow and does not...