Some block Toeplitz composition operators (Q1941090)
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scientific article; zbMATH DE number 6143216
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | Some block Toeplitz composition operators |
scientific article; zbMATH DE number 6143216 |
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Some block Toeplitz composition operators (English)
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11 March 2013
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In the paper under review, the authors show that the Bourdon-Shapiro conjecture holds for composition operators on the Hardy class \(H^2\) with minimal polynomial \(z^3-1\), i.e., the numerical range of such operators is not a disk.
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composition operators
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block Toeplitz operators
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numerical range
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Hardy class
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