Upper triangular operator matrices and limit points of the essential spectrum

DOI10.22199/issn.0717-6279-2019-03-0026OpenAlexW2968962069MaRDI QIDQ3295004

A. El Bakkali, Abdelaziz Tajmouati, Mohammed Karmouni

Publication date: 30 June 2020

Published in: Proyecciones (Antofagasta) (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.22199/issn.0717-6279-2019-03-0026

zbMATH Keywords

Fredholm operatoressential spectralimit pointoperator matrices

Mathematics Subject Classification ID

Spectrum, resolvent (47A10) Local spectral properties of linear operators (47A11)

Cites Work

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• Perturbation of spectra of operator matrices and local spectral theory
• Browder spectra and essential spectra of operator matrices
• Perturbation of Spectrums of 2 × 2 Operator Matrices
• Invertible completions of $2\times 2$ upper triangular operator matrices
• A note on Weyl’s theorem for operator matrices
• Spectra of upper triangular operator matrices

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