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JOURNALS
// Izvestiya Rossiiskoi Akademii Nauk. Seriya Matematicheskaya
// Archive
Izv. Akad. Nauk SSSR Ser. Mat.,
1969
Volume 33,
Issue 1,
Pages
39–51
(Mi im2025)
On the order of approximation by Fejér sums
È. A. Storozhenko
Abstract:
In this paper we study the degree of approximation almost everywhere by Fejér sums of orthogonal series
$\displaystyle\sum^\infty_{k=0}c_k\varphi_k(x)$
, where the coefficients
$c_k$
satisfy special conditions.
UDC:
517.5
MSC:
41A25
,
40G10
,
33C47
,
40A30
Received:
30.11.1969
Fulltext:
PDF file (787 kB)
References
English version:
Mathematics of the USSR-Izvestiya, 1969,
3
:1,
37–49
Bibliographic databases:
©
Steklov Math. Inst. of RAS
, 2024