Previous Conferences & Workshops

Oct
21
2013

Computer Science/Discrete Mathematics Seminar I

Fractional covering numbers, with an application to the Levi-Hadwiger conjecture for convex bodies
Boaz Slomka
11:15am|S-101

Let \(K\) and \(T\) be convex bodies in the \(n\)-dimensional Euclidean space. The covering number of \(K\) by \(T\) is the minimal number of translates of \(T\) required to cover \(K\) entirely. One open question regarding this classical notion is...

Oct
18
2013

Joint IAS/Princeton University Symplectic Geometry Seminar

How not to define cylindrical contact homology
1:30pm|S-101

We consider the problem of defining cylindrical contact homology, in the absence of contractible Reeb orbits, using "classical" methods. The main technical difficulty is failure of transversality of multiply covered cylinders. One can fix this...

Oct
17
2013

Joint IAS/Princeton University Number Theory Seminar

\(G\)-valued flat deformations and local models
Brandon Levin
4:30pm|S-101

I will begin with a brief introduction to the deformation theory of Galois representations and its role in modularity lifting. This will motivate the study of local deformation rings and more specifically flat deformation rings. I will then discuss...

Oct
17
2013

Non-equilibrium Dynamics and Random Matrices

Spectral theory for the \(q\)-Boson particle system
11:00am|S-101

We develop spectral theory for the generator of the \(q\)-Boson particle system. Our central result is a Plancherel type isomorphism theorem for this system; it implies completeness of the Bethe ansatz in infinite volume and enables us to solve...

Oct
16
2013

Non-equilibrium Dynamics and Random Matrices

Some inter-relations between random matrix ensembles
Forrester, Peter
2:00pm|S-101

In the early 1960's Dyson and Mehta found that the CSE relates to the COE. I'll discuss generalizations as well as other settings in random matrix theory in which \(\beta\) relates to \(4/\beta\).

Oct
15
2013

Non-equilibrium Dynamics and Random Matrices

Dynamical phase transitions, eigenstate thermalization, and Schrodinger cats within the ferromagnetic phase of an infinite-range quantum Ising model
David A. Huse
2:00pm|S-101

An isolated quantum many-body system may be a reservoir that thermalizes its constituents. I will explore an example of the interplay of this thermalization and spontaneous symmetry-breaking, in the ferromagnetic phase of an infinite-range quantum...

Oct
15
2013

Computer Science/Discrete Mathematics Seminar II

Minimal majority sequences
10:30am|S-101

Motivated by questions in Social Choice Theory I will consider the following extremal problem in Combinatorial Geometry. Call a sequence of vectors of length \(n\) with \(-1\), \(1\) entries feasible if it contains a subset whose sum is positive in...