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On the best approximation of classes $W^r H^{ω}$ by algebraic polynomials in the space $L_1$

We obtain an asymptotic equality for the best approximation of the classes $W^r H^{ω}$ by algebraic polynomials in the space $L_1$ for convex upwards, regularly varying moduli of continuity.

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Bibliographic Details
Date:	1999
Main Authors:	Kogan, A. M., Коган, А. М.
Format:	Article
Language:	Russian English
Published:	Institute of Mathematics, NAS of Ukraine 1999
Online Access:	https://umj.imath.kiev.ua/index.php/umj/article/view/4747
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Journal Title:	Ukrains’kyi Matematychnyi Zhurnal
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