Previous Conferences & Workshops

Feb
16
2007

Mathematical Physics Seminar

Optimal Transport and Geometric Inequalities
1:30pm|S-101

Since the end of the nineties, the relations of optimal transport with many functional inequalities with geometric content has been revealed and explored by several authors (Barthe, Caffarelli, Cordero, McCann, Otto and others). Sobolev inequalities...

Feb
13
2007

Motivic Cohomology

The Syntomic Regulator for K_1 of Surfaces
2:00pm|S-101

We give an explicit formula for the syntomic regulator of certain elements in the first algebraic K-theory group of a smooth complete surface over the ring of integers of a p-adic field. The formula uses the theory of Coleman integration and the...

Feb
13
2007

Computer Science/Discrete Mathematics Seminar II

Fast Johnson-Lindenstrauss Transform(s)
10:30am|S-101

A classic functional analytic result by Johnson and Lindenstrauss from 1984 implies that any Euclidean metric on n points can be represented using only k=(log n)/epsilon^2 dimensions with distortion epsilon. In computer science, this result has been...

Feb
12
2007

Computer Science/Discrete Mathematics Seminar I

Biased Positional Games and Thin Hypergraphs with Large Covers
11:15am|S-101

We consider biased positional games, played on the edge set of a complete graph Kn on n vertices. These games are played by two players, called Maker and Breaker, who take turns in claiming previously unoccupied edges of Kn. Maker claims a single...

Feb
08
2007

Joint IAS/Princeton University Number Theory Seminar

Rankin-Selberg Without Unfolding and Gelfand Pairs
A. Reznikov
4:30pm|Fine Hall 322, Princeton University

I describe a new simple way to obtain Rankin-Selberg type spectral identities. These include the classical Rankin-Selberg identity, the Motohashi identity for the forth moment of the zeta function and many new identities between various L-functions...

Feb
07
2007

Mathematical Physics Seminar

Random Conformal Snowflakes
2:30pm|S-101

In this talk we introduce a new class of random fractals which we call conformal snowflakes. We study fine structure of harmonic measure on theses snowflakes. It turns out that in this case the multifractal spectrum of harmonic measure is related to...

Feb
06
2007

Motivic Cohomology

An Approach to the Conservation of the Nearby Motive Functor
2:00pm|S-101

We present a program to prove the following conjecture: Let $S$ be the spectrum of a DVR of equi-characteristic zero with field of fraction $K$ and residue field $k$. The functor (associated to the choice of a uniformizing) $\Psi:DM_{gm}(K) \to DM_...

Feb
06
2007

Computer Science/Discrete Mathematics Seminar II

Algebraic Property Testing
10:30am|S-101

A Property P of functions is said to be testable if there exists a probabilistic algorithm that makes few (constant) queries for the value of f and accepts those satisfying P while rejecting functions that are far from any function satisfying P. In...