scientific article; zbMATH DE number 7592807

zbMath1504.47032MaRDI QIDQ5869004

Alatancang Chen, Mei Qing, Jun-Jie Huang

Publication date: 27 September 2022

Full work available at URL: http://www.actamath.com/Jwk_sxxb_cn/EN/10.12386/A20210064

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zbMATH Keywords

essential spectrumcompletionclosed operatorWeyl spectrumupper triangular operator matrix

Mathematics Subject Classification ID

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

Related Items (1)

The essential spectrum equalities of 2r unbounded upper triangular operator matrices

Cites Work

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• Characterizations of perturbations of spectra of \(2 \times 2\) upper triangular operator matrices
• The intersection of essential approximate point spectra of operator matrices
• Weyl type theorems of \(2 \times 2\) upper triangular operator matrices
• On the right (left) invertible completions for operator matrices
• Classes of linear operators. Vol. I
• Essential approximate point spectra and Weyl's theorem for operator matrices
• Generalized inverses. Theory and applications.
• Semi-Fredholm spectrum and Weyl's theorem for operator matrices
• Perturbation of Spectrums of 2 × 2 Operator Matrices
• INTERSECTIONS OF THE LEFT AND RIGHT ESSENTIAL SPECTRA OF $2\times 2$ UPPER TRIANGULAR OPERATOR MATRICES
• Invertible completions of $2\times 2$ upper triangular operator matrices
• Essential, Weyl and Browder spectra of unbounded upper triangular operator matrices

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