New approach to a-Weyl's theorem and some preservation results

DOI10.1007/S12215-020-00525-2OpenAlexW3088158916MaRDI QIDQ2047458

Kaoutar Ben Ouidren, Hassan Zariouh

Publication date: 20 August 2021

Published in: Rendiconti del Circolo Matemàtico di Palermo. Serie II (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.1007/s12215-020-00525-2

zbMATH Keywords

direct sum of operatorsupper semi-Fredholm spectrumproperty (\textit{bz})property \((w_{\pi_{00}^a})\)

Mathematics Subject Classification ID

Spectrum, resolvent (47A10) Perturbation theory of linear operators (47A55) (Semi-) Fredholm operators; index theories (47A53) Local spectral properties of linear operators (47A11)

Related Items (1)

On a class of \((bz)\)-operators

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