Previous Conferences & Workshops

Feb
27
2008

Analysis Seminar

Orbit of the Diagonal of a Power of a Nilmanifold
Alexander Leibman
2:00pm|S-101

Let p_1,...,p_k be integer polynomials of one or several variables. There is a relation between the density of polynomial configurations a+p_1(n),...,a+p_k(n) in sets of integers and the form of the closure of the diagonal of X^k under the...

Feb
27
2008

Special Seminar

Infinity Categories
10:30am|S-101

The aim of this talk is to introduce some of the technologies used in derived algebraic geometry. Beginning with an explanation of the notion of infinity-groupoid, I will develop the notion of infinity-categories. I will discuss the relationship...

Feb
26
2008

Algebro-Geometric Derived Categories and Applications

Character Sheaves and Real Groups
2:00pm|S-101

I will discuss some applications of ideas from derived algebraic geometry (DAG) to representation theory in joint work with David Nadler. First I'll review the theory of Drinfeld centers of tensor categories and its generalization to derived...

Feb
26
2008

Computer Science/Discrete Mathematics Seminar II

Sound 3-Query PCPPs Are Long
Arie Matsliah
10:30am|S-101

We present a tradeoff between the length of a 3-query probabilistically checkable proof of proximity (PCPP) and the best possible soundness obtained by querying it. Consider the task of distinguishing between "good" inputs w \in {0,1}^n that are...

Feb
25
2008

Computer Science/Discrete Mathematics Seminar I

Security Under Key-Dependent Inputs
Shai Halevi
11:15am|S-101

In this work we re-visit the question of building cryptographic primitives that remain secure even when queried on inputs that depend on the secret key. This was investigated by Black, Rogaway, and Shrimpton in the context of randomized encryption...

Feb
22
2008

Special Seminar

Introduction to Non-Abelian p-Adic Hodge Theory
10:30am|S-101

This is the first in a series of (probably) three talks whose goal is to understand Faltings’ paper "A p-adic Simpson correspondence". Roughly speaking, this is a correspondence between Higgs bundles over a smooth proper curve X over the field of p...