The extension problem for measurable positive definite functions (Q1059168)
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scientific article; zbMATH DE number 3902957
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | The extension problem for measurable positive definite functions |
scientific article; zbMATH DE number 3902957 |
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The extension problem for measurable positive definite functions (English)
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1986
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We prove some new results concerning the support of a positive definite function on R. Using these results we give an affirmative answer to an old question of M.G. Krein: Every measurable positive definite function on the interval (-a,a), \(0<a<\infty\), has an extension to R which is positive definite and measurable.
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extension problem
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support of a positive definite function
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