Proof of the Payne-Pólya-Weinberger conjecture (Q3974108)
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scientific article; zbMATH DE number 11052
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | Proof of the Payne-Pólya-Weinberger conjecture |
scientific article; zbMATH DE number 11052 |
Statements
Proof of the Payne-Pólya-Weinberger conjecture (English)
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25 June 1992
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the ratio of the first two eigenvalues
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Payne Pólya-Weinberger conjecture
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Rayleigh-Ritz inequality
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