On the spectrum of an equivariant extension of the Laplace operator in a ball (Q2730516)
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scientific article; zbMATH DE number 1631387
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | On the spectrum of an equivariant extension of the Laplace operator in a ball |
scientific article; zbMATH DE number 1631387 |
Statements
8 August 2001
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Laplacian
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correct boundary value problem
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solvable extension
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0.91078234
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0.9087552
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0.9074351
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0.90414125
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On the spectrum of an equivariant extension of the Laplace operator in a ball (English)
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It is shown that the operator corresponding to a general rotation-invariant correct boundary value problem for the differential expression \(-\Delta\) on a ball has a discrete spectrum. Positivity conditions are also found.
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