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Integral representations for Padé-type operators. (English) Zbl 1023.41012

The author considers an explicit form of the Padé-type operators. To do this is considered the representation of Padé-type approximants to the Fourier series of the harmonic functions in the open disk and of the \(L^p\)-functions on the circle by means of integral-formulas and then defined the corresponding Padé-type operators. Properties of these integral operators are studied and some convergence results are proved.

MSC:

41A21 Padé approximation
30E05 Moment problems and interpolation problems in the complex plane
30E10 Approximation in the complex plane
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