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JOURNALS // Izvestiya of Saratov University. Mathematics. Mechanics. Informatics // Archive

Izv. Saratov Univ. Math. Mech. Inform., 2013 Volume 13, Issue 4(1), Pages 27–35 (Mi isu450)

Mathematics

Approximation of bounded $p$-variation periodic functions by generalized Abel–Poisson and logarithmic means

A. A. Tyuleneva

Saratov State University, Russia, 410012, Saratov, Astrahanskaya st., 83

Abstract: An asymptotic estimate of approximation by generalized Abel–Poisson means in $p$-variation metric on the class of functions with given majorant of $p$-variational best approximation is proved. Several other quantity results on approximation by these means are obtained.

Key words: functions of bounded $p$-variation, generalized Abel–Poisson means, best approximation, $p$-variational modulus of continuity.

UDC: 517.518

DOI: 10.18500/1816-9791-2013-13-4-27-35



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