On a characterization of the essential spectra of the sum and the product of two operators

DOI10.1016/j.jmaa.2011.07.054zbMath1223.47006OpenAlexW2030771893MaRDI QIDQ640945

Salma Charfi, Faiçal Abdmouleh, Aref Jeribi

Publication date: 21 October 2011

Published in: Journal of Mathematical Analysis and Applications (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.1016/j.jmaa.2011.07.054

zbMATH Keywords

Fredholm operatorRiesz operatorSchechter essential spectrumFredholm perturbationBrowder essential spectrumWolf essential spectrum

Mathematics Subject Classification ID

Spectrum, resolvent (47A10) (Semi-) Fredholm operators; index theories (47A53)

Related Items (3)

On a characterization of the structured Wolf, Schechter and Browder essential pseudospectra ⋮ Spectral theory involving the concept of quasi-compact perturbations ⋮ On some classes of demicompact linear relation and some results of essential pseudospectra

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