Operator matrices and their Weyl type theorems

DOI10.2298/FIL2010191AzbMath1500.47007OpenAlexW3138979922MaRDI QIDQ5081166

Ji Eun Lee, Eungil Ko, Il Ju An

Publication date: 13 June 2022

Published in: Filomat (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.2298/fil2010191a

zbMATH Keywords

generalized Weyl's theoremgeneralized \(a\)-Weyl's theoremBrowder essential approximate point spectrum\(2 \times 2\) operator matricesgeneralised \(a\)-Browder's theorem

Mathematics Subject Classification ID

Spectrum, resolvent (47A10) (Semi-) Fredholm operators; index theories (47A53) Operator matrices (47A08)

Cites Work

• Weyl's theorem for upper triangular operator matrices
• Perturbation of spectra for a class of \(2\times 2\) operator matrices
• Drazin spectrum of operator matrices on the Banach space
• Weyl type theorems for left and right polaroid operators
• Closedness of ranges of upper-triangular operators
• Weyl's theorem for operator matrices
• On a class of quasi-Fredholm operators
• Generalized Browder's theorem and SVEP
• Essential point spectra of operator matrices trough local spectral theory
• Spectral analysis using ascent, descent, nullity and defect
• On semi B-Fredholm operators
• On Drazin invertibility
• Invertible completions of $2\times 2$ upper triangular operator matrices
• A note on Weyl’s theorem for operator matrices
• The boundedness below of \(2\times 2\) upper triangular operator matrices
• Unnamed Item
• Unnamed Item
• Unnamed Item
• Unnamed Item
• Unnamed Item
• Unnamed Item
• Unnamed Item

This page was built for publication: Operator matrices and their Weyl type theorems