Beneteau: Zeros of optimal polynomial approximants and Jacobi matrices
Tid: On 2017-06-07 kl 11.00 - 12.00
Plats: Room 306, building 6, Kräftriket, Department of Mathematics, Stockholm University
Medverkande: Beneteau, Catherine (University of South Florida)
Abstract: In this talk, I will introduce some polynomials that are best approximants in some sense to reciprocals of functions in the Bergman spaces of the disk. I will discuss the extremal problem of finding a zero of minimal modulus, and will show how that extremal problem is related to Jacobi matrices and real orthogonal polynomials.