Previous Conferences & Workshops

Apr
03
2013

Workshop on Topology: Identifying Order in Complex Systems

Towards a Covariant Theory of Coarsening via Emergent Symmetries
Stephen Watson
4:30pm|David Rittenhouse Laboratory, A8

The scaling symmetries of both static and dynamic critical phenomena naturally yield associated power laws and scaling functions. Going beyond simple scalings, we reveal how general emergent symmetries control the coarsening statistics of non...

Apr
03
2013

Workshop on Topology: Identifying Order in Complex Systems

Properties of Cellular Microstructures: Polycrystals, Foams, and their Idealizations
David Srolovitz
1:30pm|David Rittenhouse Laboratory, 4N12

Cellular structures are compact domains joined along codimension 1 interfaces to fill space. Such cellular microstructures are ubiquitous in materials science and biology. I will briefly review the basic theory of cellular structure evolution via...

Apr
02
2013

Analysis Seminar

Resonances for Normally Hyperbolic Trapped Sets
Semyon Dyatlov
3:15pm|S-101

Resonances are complex analogs of eigenvalues for Laplacians on noncompact manifolds, arising in long time resonance expansions of linear waves. We prove a Weyl type asymptotic formula for the number of resonances in a strip, provided that the set...

Apr
02
2013

Computer Science/Discrete Mathematics Seminar II

An Arithmetic Analogue of Fox's Improved Triangle Removal Lemma
10:30am|S-101

We give an arithmetic version of the recent proof of the improved triangle removal lemma by Fox [Fox11], for the group F_2^n. A triangle in F_2^n is a tuple (x,y,z) such that x+y+z = 0. The triangle removal lemma for F_2^n states that for every \eps...