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Integral representation of even positive-definite functions of two variables |
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| Authors: | O V Lopotko |
| Institution: | 1.Lviv,Ukraine |
| Abstract: | We obtain an integral representation of even functions of two variables for which the kernel k 1(x + y) + k 2(x − y)], x, y ∈ R 2, is positive definite. |
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