WEYL TYPE-THEOREMS FOR DIRECT SUMS

DOI10.4134/BKMS.2012.49.5.1027zbMath1263.47016MaRDI QIDQ3166801

Hassan Zariouh, Mohammed Berkani

Publication date: 15 October 2012

Published in: Bulletin of the Korean Mathematical Society (Search for Journal in Brave)

zbMATH Keywords

direct sumssemi-Fredholm operatorsWeyl spectrumBrowder spectrumproperty \((gw)\)Weyl-type theoremsproperty \((b)\)property \((gb)\)essential semi-B-Fredholm spectrum

Mathematics Subject Classification ID

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

Related Items (9)

Strong variations of Weyl and Browder type theorems for direct sums and restrictions ⋮ On a class of \((bz)\)-operators ⋮ Property (UWΠ) and localized SVEP ⋮ Extended Weyl-type theorems for direct sums ⋮ Property \((UW{\scriptstyle \Pi})\) under perturbations ⋮ Unnamed Item ⋮ New approach to a-Weyl's theorem and some preservation results ⋮ Unnamed Item ⋮ Asymetric Fuglede Putnam’s theorem for operators reduced by their eigenspaces

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