On subscalarity of some \(2 \times 2\) \(M\)-hyponormal operator matrices (Q1724166)
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scientific article; zbMATH DE number 7022424
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | On subscalarity of some \(2 \times 2\) \(M\)-hyponormal operator matrices |
scientific article; zbMATH DE number 7022424 |
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On subscalarity of some \(2 \times 2\) \(M\)-hyponormal operator matrices (English)
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14 February 2019
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Summary: We provide some conditions for \(2 \times 2\) operator matrices whose diagonal entries are \(M\)-hyponormal operators to be subscalar. As a consequence, we obtain that a Weyl-type theorem holds for such operator matrices.
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\(2 \times 2\) operator matrices
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\(M\)-hyponormal operators
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subscalar
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Weyl-type theorem
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