On a lower bound for the rate of convergence of multipoint Padé approximants of piecewise analytic functions

DOI10.1070/IM9047zbMath1469.30079OpenAlexW3115721201MaRDI QIDQ4999402

Viktor I. Buslaev

Publication date: 6 July 2021

Published in: Izvestiya: Mathematics (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.1070/im9047

zbMATH Keywords

orthogonal polynomialsPadé approximantsrational approximationconvergence in capacitydistribution of polesStahl's theoremGonchar-Rakhmanov theorem

Mathematics Subject Classification ID

Approximation in the complex plane (30E10) Padé approximation (41A21) Rate of convergence, degree of approximation (41A25) Simultaneous approximation (41A28)

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