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Matematicheskie Zametki, 1976, Volume 19, Issue 1, Pages 49–62 (Mi mzm7722)  

This article is cited in 1 scientific paper (total in 1 paper)

Approximation of continuous functions by trigonometric polynomials almost everywhere

T. V. Radoslavova

V. A. Steklov Mathematical Institute, USSR Academy of Sciences
Full-text PDF (821 kB) Citations (1)
Abstract: We consider the problem of the rate of approximation of continuous 2π-periodic functions of class WrH[ω]C by trigonometric polynomials of order n on sets of total measure. We prove that when r0, ω(δ)δ1 (δ0) there exists a function fWrH[ω]C such that ˜fWrH[ω]C and for any sequence {tn}n=1 we have almost everywhere on [0,2π]
¯limn|f(x)tn(x)|nrω1(1/n)>Cx>0¯limn|˜f(x)tn(x)|nrω1(1/n)>Cx>0
Received: 24.09.1975
English version:
Mathematical Notes, 1976, Volume 19, Issue 1, Pages 29–36
DOI: https://doi.org/10.1007/BF01147614
Bibliographic databases:
UDC: 517.5
Language: Russian
Citation: T. V. Radoslavova, “Approximation of continuous functions by trigonometric polynomials almost everywhere”, Mat. Zametki, 19:1 (1976), 49–62; Math. Notes, 19:1 (1976), 29–36
Citation in format AMSBIB
\Bibitem{Rad76}
\by T.~V.~Radoslavova
\paper Approximation of continuous functions by trigonometric polynomials almost everywhere
\jour Mat. Zametki
\yr 1976
\vol 19
\issue 1
\pages 49--62
\mathnet{http://mi.mathnet.ru/mzm7722}
\mathscinet{http://mathscinet.ams.org/mathscinet-getitem?mr=447939}
\zmath{https://zbmath.org/?q=an:0332.42003|0327.42004}
\transl
\jour Math. Notes
\yr 1976
\vol 19
\issue 1
\pages 29--36
\crossref{https://doi.org/10.1007/BF01147614}
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  • https://www.mathnet.ru/eng/mzm/v19/i1/p49
  • This publication is cited in the following 1 articles:
    1. K. I. Oskolkov, “Approximation properties of summable functions on sets of full measure”, Math. USSR-Sb., 32:4 (1977), 489–514  mathnet  crossref  mathscinet  zmath  isi
    Citing articles in Google Scholar: Russian citations, English citations
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