Previous Conferences & Workshops

May
16
2019

Informal Group Action Seminar

A probabilistic Takens theorem
Yonatan Gutman
11:00am|Simonyi Hall 101

Let $X \subset \R^N$ be a Borel set, $\mu$ a Borel probability measure on $X$ and $T:X \to X$ a Lipschitz and injective map. Fix $k \in \N$ greater than the (Hausdorff) dimension of $X$ and assume that the set of $p$-periodic points has dimension...

May
09
2019

Joint IAS/Princeton University Number Theory Seminar

Generalized Hasse-Herbrand functions
Isabel Leal
4:30pm|Princeton University, Fine Hall 214

The classical Hasse-Herbrand function is an important object in ramification theory, related to higher ramification groups. In this talk, I will discuss generalizations of the Hasse-Herbrand function and go over some of their properties. These...

May
06
2019

Joint IAS/Princeton University Algebraic Geometry Seminar

Hecke orbits and foliations
5:00pm|Simonyi Hall 101

Motivation. Isogenies with a given polarized abelian variety give moduli points in a Hecke orbit. In characteristic zero any Hecke orbit is dense in this moduli space. What can be said about the Zariski closure of a Hecke orbit in positive...

May
06
2019

Holi Festival

4:00pm|Housing Activities Room

Anisha Thomas is hosting the festival of Holi for the IAS community.

May
06
2019

Analysis Seminar

Singularity formation for some incompressible Euler flows
Tarek Elgindi
3:00pm|Simonyi Hall 101

We describe a recent construction of self-similar blow-up solutions of the incompressible Euler equation. A consequence of the construction is that there exist finite-energy $C^{1,a}$ solutions to the Euler equation which develop a singularity in...

May
02
2019

Joint IAS/Princeton University Number Theory Seminar

Singularities in reductions of Shimura varieties
4:30pm|Simonyi Hall 101

The singularities in the reduction modulo $p$ of the modular curve $Y_0(p)$ are visualized by the famous picture of two curves meeting transversally at the supersingular points. It is a fundamental question to understand the singularities which...