Demicompactness perturbation in Banach algebras and some stability results

DOI10.1515/gmj-2022-2192OpenAlexW4307211761MaRDI QIDQ2681209

Bilel Krichen, Aref Jeribi, Slim Chelly

Publication date: 7 February 2023

Published in: Georgian Mathematical Journal (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.1515/gmj-2022-2192

zbMATH Keywords

Banach algebraFredholm theoryessential spectrademicompactness theory

Mathematics Subject Classification ID

Several-variable operator theory (spectral, Fredholm, etc.) (47A13) Linear operators on Banach algebras (47B48) Spectral sets of linear operators (47A25) Algebras of operators on Banach spaces and other topological linear spaces (47L10)

Related Items (1)

On the operator equation \(AX-XB+XDX=C\)

Cites Work

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• Perturbation theory relative to a Banach algebra of operators
• Spectral Theory and Applications of Linear Operators and Block Operator Matrices
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