Diminishing of the spectrum of an operator under extension (Q750845)
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scientific article; zbMATH DE number 4175778
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | Diminishing of the spectrum of an operator under extension |
scientific article; zbMATH DE number 4175778 |
Statements
Diminishing of the spectrum of an operator under extension (English)
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1990
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See the review in Zbl 0636.47013.
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nonempty nonessential spectrum
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isometric extension
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