Perturbations by quadratic forms and invariance of essential spectra (Q1051232)
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scientific article; zbMATH DE number 3812320
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | Perturbations by quadratic forms and invariance of essential spectra |
scientific article; zbMATH DE number 3812320 |
Statements
Perturbations by quadratic forms and invariance of essential spectra (English)
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1984
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invariance of essential spectra
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relative compactness
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elliptic regularization
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small perturbation
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