Weyl type theorems of \(2 \times 2\) upper triangular operator matrices (Q891377)
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scientific article; zbMATH DE number 6509530
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | Weyl type theorems of \(2 \times 2\) upper triangular operator matrices |
scientific article; zbMATH DE number 6509530 |
Statements
Weyl type theorems of \(2 \times 2\) upper triangular operator matrices (English)
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17 November 2015
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The paper presents a study of the spectral properties of \(2\times 2\) upper triangular matrices with entries being Hilbert space operators. The topics treated include the Weyl spectrum, the Browder spectrum, the essential approximate point spectrum and the Browder essential approximate point spectrum. Also, Weyl-type theorems for upper triangular operator matrices are discussed.
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upper triangular operator matrix
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Weyl's theorem
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Browder's theorem
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\(a\)-Weyl's theorem
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\(a\)-Browder's theorem
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