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Order Estimates for the Best Approximations and Approximations by Fourier Sums of the Classes of (ψ, β)-Differential Functions

We establish exact-order estimates for the best uniform approximations by trigonometric polynomials on the classes C ψ β, p of 2π-periodic continuous functions f defined by the convolutions of functions that belong to the unit balls in the spaces L p , 1 ≤ p

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Datum:	2013
Hauptverfasser:	Hrabova, U. Z., Serdyuk, A. S., Грабова, У. З., Сердюк, А. С.
Format:	Artikel
Sprache:	Ukrainisch Englisch
Veröffentlicht:	Institute of Mathematics, NAS of Ukraine 2013
Online Zugang:	https://umj.imath.kiev.ua/index.php/umj/article/view/2500
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Назва журналу:	Ukrains’kyi Matematychnyi Zhurnal
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