Previous Conferences & Workshops

Nov
29
2011

Analysis Seminar

The Energy-Critical Defocusing NLS in Periodic Settings
2:30pm|S-101

I will discuss some recent work, joint with B. Pausader, on constructing global solutions of defocusing energy-critical nonlinear Schrodinger equations in periodic and semiperiodic settings.

Nov
29
2011

Computer Science/Discrete Mathematics Seminar II

Shorter Long Code and Applications to Unique Games
10:30am|S-101

The long code is a central tool in hardness of approximation, especially in questions related to the unique games conjecture. Many hardness reductions and constructions of integrality gap instances use the long code as a core gadget. However, this...

Nov
28
2011

Members’ Seminar

Loop Products and Dynamics
2:00pm|S-101

A metric on a compact manifold M gives rise to a length function on the free loop space LM whose critical points are the closed geodesics on M in the given metric. Morse theory gives a link between Hamiltonian dynamics and the topology of loop...

Nov
28
2011

Computer Science/Discrete Mathematics Seminar I

Entropy-Based Bounds on Dimension Reduction in L_1
11:15am|S-101

We show that there exists an $N$-point subset of $L_1$ such that for every $D > 1$, embedding it into $\ell^d_1$ with distortion $D$ requires dimension $d$ at least $N^{\Omega(1/D^2)}$, and that for every $\epsilon > 0$ there exists an $N$-point...

Nov
25
2011

Geometry Seminar

There will be no meeting of the seminar this week.
1:30pm|S-101