One-dimensional perturbation of operators (Q1068340)
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scientific article; zbMATH DE number 3931820
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | One-dimensional perturbation of operators |
scientific article; zbMATH DE number 3931820 |
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One-dimensional perturbation of operators (English)
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1984
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One-dimensional perturbations of isometries are discussed. The main result is that ''certain rank one operators of small norm will split off a unitary piece from the shift''. The theorem has two applications to the perturbation theory.
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unilateral shift
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Hardy class
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One-dimensional perturbations of isometries
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certain rank one operators of small norm will split off a unitary piece from the shift
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