Weighted approximation in mean of classes of analytic functions by algebraic polynomials and finite-dimensional subspaces

We establish estimates for classic approximation quantities for sets from functional spaces (classes of functions analytic in Jordan domains), namely, for the best polynomial approximations and Kolmogorov widths.

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Bibliographic Details
Date:1999
Main Authors: Romanyuk, V. S., Романюк, В. С.
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/4651
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Journal Title:Ukrains’kyi Matematychnyi Zhurnal
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Ukrains’kyi Matematychnyi Zhurnal