Spectrum of random perturbations of finitely banded Toeplitz Matrices | ICTS

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Seminar
Speaker
Anirban Basak (ICTS-TIFR, Bangalore)
Date & Time
Wed, 29 August 2018, 14:30 to 15:30
Venue
Emmy Noether Seminar Room, ICTS Campus, Bangalore
Resources
Abstract

Consider a finitely banded Toeplitz matrix TN and let EN be  an error matrix with a polynomially vanishing operator norm. In this talk, we will discuss the limiting spectral measure of TN+EN. We will see that under a very mild assumption on the entries of EN the limit is a push forward of the uniform measure on the unit circle by the symbol of the Toeplitz matrix TN. This is based on an ongoing joint work with Elliot Paquette and Ofer Zeitouni.