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Mathematics of the USSR-Sbornik, 1991, Volume 68, Issue 2, Pages 325–338
DOI: https://doi.org/10.1070/SM1991v068n02ABEH002107
(Mi sm1670)
 

This article is cited in 16 scientific papers (total in 16 papers)

On the uniqueness of trigonometric series

G. G. Gevorkyan
References:
Abstract: It is proved that
\begin{equation} \frac {a_0}2+\sum_{n=1}^\infty(a_n\cos nx+b_n\sin nx)=\sum_{n=0}^\infty A_n(x) \end{equation}
is the Fourier series of an integrable function $f(x)$ if and only if
  • 1) $\lim\limits_{h\to0}S(x,h)=f(x)$ almost everywhere, and
  • 2) $\lim\limits_{\lambda\to\infty}\inf\lambda\mu\{x\in[0,2\pi]\colon S^\ast(x)>\lambda\}=0$,
where $S(x,h)=\sum\limits_{n=0}^\infty A_n(x)\biggl(\dfrac{\sin nh}{nh}\biggr)^2$ and $S^\ast(x)=\sup\limits_{h>0}|S(x,h)|$.
Bibliography: 6 titles.
Received: 06.10.1988
Bibliographic databases:
UDC: 517.51
MSC: 42A63
Language: English
Original paper language: Russian
Citation: G. G. Gevorkyan, “On the uniqueness of trigonometric series”, Math. USSR-Sb., 68:2 (1991), 325–338
Citation in format AMSBIB
\Bibitem{Gev89}
\by G.~G.~Gevorkyan
\paper On the uniqueness of trigonometric series
\jour Math. USSR-Sb.
\yr 1991
\vol 68
\issue 2
\pages 325--338
\mathnet{http://mi.mathnet.ru//eng/sm1670}
\crossref{https://doi.org/10.1070/SM1991v068n02ABEH002107}
\mathscinet{http://mathscinet.ams.org/mathscinet-getitem?mr=1034424}
\zmath{https://zbmath.org/?q=an:0693.42012|0715.42015}
\isi{https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=Publons&SrcAuth=Publons_CEL&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=A1991FE73700002}
Linking options:
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  • https://doi.org/10.1070/SM1991v068n02ABEH002107
  • https://www.mathnet.ru/eng/sm/v180/i11/p1462
  • This publication is cited in the following 16 articles:
    Citing articles in Google Scholar: Russian citations, English citations
    Related articles in Google Scholar: Russian articles, English articles
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