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Pointwise approximation of functions by matrix operators of their Fourier series with r-differences of the entries

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Abstract

We extend the results of Xh.Z. Krasniqi [Acta Comment. Univ. Tartu. Math., 17:89–101, 2013] and the authors [Acta Comment. Univ. Tartu. Math., 13:11–24, 2019] to the case where in the measures of estimations r-differences of the entries are used.

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Authors and Affiliations

  1. Faculty of Mathematics, Computer Science and Econometrics, University of Zielona Góra, ul. Szafrana 4a, 65-516, Zielona Góra, Poland

    Włodzimierz Łenski & Bogdan Szal

Authors
  1. Włodzimierz Łenski
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  2. Bogdan Szal
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Correspondence to Włodzimierz Łenski.

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Łenski, W., Szal, B. Pointwise approximation of functions by matrix operators of their Fourier series with r-differences of the entries. Lith Math J 60, 494–512 (2020). https://doi.org/10.1007/s10986-020-09501-w

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  • DOI: https://doi.org/10.1007/s10986-020-09501-w

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