Previous Conferences & Workshops

Apr
18
2006

Lie Groups, Representations and Discrete Mathematics

Actions of Product Groups on Manifolds
Alex Furman
2:00pm|S-101

We analyze volume-preserving actions of product groups on Riemannian manifolds. Under a natural spectral irreducibility assumption, we prove the following dichotomy: Either the action is measurably isometric, in which case there are at most two...

Apr
18
2006

Computer Science/Discrete Mathematics Seminar II

Black Boxes, Inc.
10:30am|S-101

I will survey a number of settings withing theoretical computer sceince in which certain computations are abstracted by "black boxes", namely devices for which we can observe the input-output behavior, but not the actual "guts" of the computation. I...

Apr
17
2006

Members’ Seminar

Fake Projective Spaces
4:00pm|S-101

A fake projective space is a smooth complex projective algebraic variety which is uniformized by the unit ball in $\mathbb C^n$ and whose Betti numbers are the same as that of $\mathbb P^n_{\mathbb{C}}$. The first example of a fake projective plane...

Apr
17
2006

Computer Science/Discrete Mathematics Seminar I

Simultaneous Optimization and Fairness
Ashish Goel
11:15am|S-101

In this talk, we will sketch the theory of simultaneous optimization for concave profit functions, and point out connections to fairness. More precisely, suppose we would like to simultaneously approximate all symmetric utility functions over a...

Apr
14
2006

Mathematical Physics Seminar

Blow Ups in Complex Solutions of the 3D-Navier-Stokes System and Renormalization Group Method
Yakov Sinai
4:00pm|S-101
Apr
12
2006

Joint IAS/Princeton University Number Theory Seminar

Singular Moduli
2:00pm|Fine Hall 314, Princeton University

In this lecture, I will describe some results from the thesis of Jarad Schofer, (Maryland, 2005), which provide a generalization of the Gross-Zagier factorization of singular moduli or arbitrary Borcherds forms. After a review of the construction of...

Apr
11
2006

Computer Science/Discrete Mathematics Seminar II

New Techniques in Online Game Playing
Elad Hazan
10:30am|S-101

We introduce a new algorithm and a new analysis technique that is applicable to a variety of online optimization scenarios, including regret minimization for Lipschitz regret functions, universal portfolio management, online convex optimization and...

Apr
10
2006

Members’ Seminar

String Topology and Closed Geodesics
4:00pm|S-101

Expository talk on work in progress. M.Chas and D.Sullivan introduced a product on the homology of the free loop spaace of a compact, oriented manifold M that has also been studied by R.L.Cohen, V.Godin, J.D.S.Jones, J.Klein, and others. If M is...

Apr
10
2006

Mathematical Physics Seminar

On the Fourier Law for Coupled Oscillators
Anti Kupiainen
2:00pm|S-101

We discuss the problem of deriving Fourier's law of heat transport in a Hamiltonian system of coupled anharmonic oscillators subject to boundary noise and derive it in a closure approximation of the stationary state of the system.