Published: Nov. 14, 2014

Riemann--Hilbert Problems, Computation and Universality

Tom Trogdon

Courant Institute of Mathematical SciencesNew York University

Date and time: 

Friday, November 14, 2014 - 3:00pm

Location: 

ECCR 245

Abstract: 

Riemann--Hilbert (RH) problems provide a powerful and rigorous tool to study many problems in pure and applied mathematics.  Problems in integrable systems and random matrix theory have been solved with the aid of RH problems --- including a proof of universality for unitary random matrix ensembles. RH problems can be approached numerically with applications to the numerical solution of PDEs and the Monte Carlo sampling of random matrix ensembles.  The resulting methods are seen to have accuracy and complexity advantages over previously existing methods. In this talk, I will discuss this numerical methodology and the concept of universality, making connections to the statistical analysis of numerical algorithm runtimes and a model of neural computation.