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→Carathéodory's positivity criterion for holomorphic functions: Coefficients in the taylor series of f are not the same like covariance coefficients a / fourier coefficients respektive....that was very misleading Tags: Mobile edit Mobile web edit |
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Then
:<math> f_n(re^{i\theta}) = {1\over 2\pi}\int_0^{2\pi} {1-r^2\over 1-2r\cos(\theta-\varphi) + r^2 }\, f_n(\varphi)\,d\
where
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