Previous Conferences & Workshops

Mar
15
2007

Joint IAS/Princeton University Number Theory Seminar

Mixed Hodge Polynomials of Character Varieties
Fernando Rodriguez Villegas
5:30pm|S-101

Thanks to the Weil conjectures (proved by Deligne) we know that counting points of varieties over finite fields yields topological information about them. In this talk I will describe such a calculation for certain character varieties...

Mar
15
2007

Motivic Cohomology

Cycles on Complete Intersections
12:00pm|S-101

We will describe some bounds on the multidegrees of complete intersections to have trivial Chow groups in low dimensions.

Mar
14
2007

Complex Algebraic Geometry

On the Abel-Radon Transform of Locally Residual Currents with Respect to a Family of Complete Intersections
2:30pm|S-101

Let $X\subset \P^N$ be a projective submanifold of dimension $n$ in the complex projective space $\P^N$. Let $U$ be a domain in the parameter space $T$ of complete intersections of codimension $m$ and of a given bidegree $(d_1,\dots,d_m)$ in $\P^N$...

Mar
13
2007

Computer Science/Discrete Mathematics Seminar II

The Design and Analysis of Simple Algorithms (for Search and Optimization)
11:30am|S-101

The "Design and Analysis of Algorithms" or "Introduction to Algorithms" is a basic undergraduate course in CS. In such courses, the organizational theme is often in terms of "basic algorithmic paradigms" such as greedy algorithms, dynamic...

Mar
12
2007

Hermann Weyl Lectures

The Ax Conjecture and Degenerations
3:00pm|S-101

Lecture 4. The Ax conjecture and degenerations. Originating with his studies on the logic of finite fields, James Ax conjectured that every PAC field is $C_1$. The recent proof of this in characteristic 0 is connected with degenerations of...

Mar
12
2007

Computer Science/Discrete Mathematics Seminar I

Disjoint Paths in Networks
Sanjeev Khanna
12:15pm|S-101

A fundamental problem in combinatorial optimization is the edge-disjoint paths problem (EDP). We are given a network and a collection of source-destination pairs in the network. The goal is to maximize the number of pairs that can be connected by...

Mar
08
2007

Joint IAS/Princeton University Number Theory Seminar

Subconvexity, Entropy and Equidistribution of Periodic Torus Orbits
4:30pm|Fine Hall 322, Princeton University

A well known theorem of Duke states that the collection of all closed geodesics of a given discriminant on SL(2,Z) \ H becomes equidistributed as the discriminant goes to infinity and can be proved using subconvex estimates for L-functions...