English

B-Fredholm and Drazin invertible operators through localized SVEP

Functional Analysis 2009-06-19 v1

Abstract

Let XX a Banach space and TT a bounded linear operator on X.X. We denote by S(T)S(T) the set of all λ\cit\lambda \in \cit such that TT does not have the single-valued extension property at λ\lambda. In this note we prove equality up to S(T)S(T) between the left Drazin spectrum and the left B-Fredholm spectrum and between the semi-essential approximate point spectrum and the left Drazin spectrum. As applications we investigate generalized Weyl's theorem for operator matrices and multipliers operators.

Keywords

Cite

@article{arxiv.0906.3441,
  title  = {B-Fredholm and Drazin invertible operators through localized SVEP},
  author = {M. Amouch and H. Zguitti},
  journal= {arXiv preprint arXiv:0906.3441},
  year   = {2009}
}
R2 v1 2026-06-21T13:15:07.060Z