Numerical ranges of Toeplitz operators with matrix symbols (Q765181)
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scientific article; zbMATH DE number 6015670
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | Numerical ranges of Toeplitz operators with matrix symbols |
scientific article; zbMATH DE number 6015670 |
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Numerical ranges of Toeplitz operators with matrix symbols (English)
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19 March 2012
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The numerical range is studied for the Toeplitz operators acting on the vector Hardy space \(H^2\) with definite or indefinite metric. The closure of the respective numerical range is completely described. Some observations regarding its boundary are made for the definite case.
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Toeplitz operator
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multiplication operator
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numerical range
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