Linear operators preserving the \((p,q)\) numerical radius (Q1329993)
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scientific article; zbMATH DE number 614167
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | Linear operators preserving the \((p,q)\) numerical radius |
scientific article; zbMATH DE number 614167 |
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Linear operators preserving the \((p,q)\) numerical radius (English)
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15 August 1994
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The author introduces the \((p,q)\) numerical range and radius for a complex \(n \times n\) matrix and characterizes the linear operators on \(\mathbb{C}^{n \times n}\) which preserve the \((p,q)\) numerical radius.
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numerical range
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linear operators
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numerical radius
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