Previous Conferences & Workshops

Nov
26
2013

Computer Science/Discrete Mathematics Seminar II

Toward Better Formula Lower Bounds: An Information Complexity Approach to the KRW Composition Conjecture
10:30am|S-101

One of the major open problems in complexity theory is proving super-polynomial lower bounds for circuits with logarithmic depth (i.e.,\(P \not\subseteq NC_1\) ). This problem is interesting both because it is tightly related to understanding the...

Nov
25
2013

Members’ Seminar

Random Cayley Graphs
2:00pm|S-101

The study of random Cayley graphs of finite groups is related to the investigation of Expanders and to problems in Combinatorial Number Theory and in Information Theory. I will discuss this topic, describing the motivation and focusing on the...

Nov
25
2013

Computer Science/Discrete Mathematics Seminar I

Geometry and matrix multiplication
Joseph Landsberg
11:15am|S-101

Algebraic geometry and representation theory have played an important role in obtaining lower bounds in algebraic complexity theory. After giving an overview of the general set-up, I will present very recent results that indicate a possible role for...

Nov
22
2013

Joint IAS/Princeton University Symplectic Geometry Seminar

Gopakumar-Vafa conjecture for symplectic manifolds
Eleny Ionel
1:30pm|Fine 322, Princeton University

The Gopakumar-Vafa conjecture predicts that the Gromov-Witten invariants of a Calabi-Yau 3-fold can be canonically expressed in terms of integer invariants called BPS numbers. In this talk, based on joint work with Tom Parker, I describe the proof...

Nov
21
2013

Joint IAS/Princeton University Number Theory Seminar

Genus of abstract modular curves with level \(\ell\) structure
Ana Cadoret
4:30pm|S-101

To any bounded family of \(\mathbb F_\ell\)-linear representations of the etale fundamental of a curve \(X\) one can associate families of abstract modular curves which, in this setting, generalize the `usual' modular curves with level \(\ell\)...

Nov
21
2013

Non-equilibrium Dynamics and Random Matrices

Diffusion and superdiffusion of energy in one dimensional systems of oscillators
Stefano Olla
3:00pm|Dilworth Room

We consider a system of harmonic oscillators with stochastic perturbations of the dynamics that conserve energy and momentum. In the one dimensional unpinned case, under proper space-time rescaling, Wigner distribution of energy converges to the...

Nov
21
2013

Non-equilibrium Dynamics and Random Matrices

All-order asymptotics in beta ensembles in the multi-cut regime
Gaetan Borot
11:00am|S-101

Based on joint work with A. Guionnet (MIT). The beta ensemble is a particular model consisting of N strongly correlated real random variables. For specific values of beta, it is be realized by the eigenvalues of a random hermitian matrix whose...