Communications of the
Korean Mathematical Society
CKMS

ISSN(Print) 1225-1763 ISSN(Online) 2234-3024

Article

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Commun. Korean Math. Soc. 2014; 29(2): 257-262

Printed April 1, 2014

https://doi.org/10.4134/CKMS.2014.29.2.257

Copyright © The Korean Mathematical Society.

Generalized Riesz points for perturbations of Toeplitz operators

An Hyun Kim

Changwon National University

Abstract

In this note we consider ``generalized Riesz points" for compact and quasinilpotent perturbations of Toeplitz operators acting on the Hardy space of the unit circle.

Keywords: generalized Riesz points, Toeplitz operators, perturbations, Weyl's theorem, Browder's theorem

MSC numbers: Primary 47A10, 47A55, 47B35