News Overview

In this week's IWR Scientific Computing Seminar on Friday, January 27, Nick Trefethen (University of Oxford) will give a talk at 15:15h in the Conference Room on the fifth floor of Mathematikon:

Title: Applications of AAA Rational Approximation
Abstract: For the first time, a method has recently become available for fast computation of near-best rational approximations on arbitrary sets in the real line or complex plane: the AAA algorithm (Nakatsukasa-Sete-T. 2018). We will present the algorithm and then demonstrate a number of applications, including detection of singularities, model order reduction, analytic continuation, interpolation of equispaced data, smooth extension of multivariate real functions, extrapolation of ODE and PDE solutions into the complex plane, solution of Laplace problems, conformal mapping and Wiener-Hopf factorization.
(joint work with Stefano Costa and others)
Time & place: Friday January 27, 15:15h, Mathematikon, 5th floor, Conference Room