Essential spectrum of upper triangular operator matrices

DOI10.1007/s43034-020-00054-0zbMath1498.47009OpenAlexW3004878892MaRDI QIDQ781722

Jun-Jie Huang, Xiu Feng Wu

Publication date: 17 July 2020

Published in: Annals of Functional Analysis (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.1007/s43034-020-00054-0

zbMATH Keywords

perturbation theoryessential spectrum\(n\times n\)left essential spectrumright essential spectrum

Mathematics Subject Classification ID

Spectrum, resolvent (47A10) Perturbation theory of linear operators (47A55) Operator matrices (47A08)

Related Items (4)

CFI upper triangular operator matrices ⋮ Invertibility properties of operator matrices on Hilbert spaces ⋮ Perturbing the spectrum of operator \(T_n^d(A)\) ⋮ The Kachurovskij spectrum of Lipschitz continuous nonlinear block operator matrices

Cites Work

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• Perturbation of Spectrums of 2 × 2 Operator Matrices
• Weyl spectra of operator matrices
• Riesz points of upper triangular operator matrices
• Invertible completions of $2\times 2$ upper triangular operator matrices
• Spectral theory of linear operators and spectral systems in Banach algebras
• The boundedness below of \(2\times 2\) upper triangular operator matrices

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