Dimeters in $L_2$ classes of differentiated functions determined by continuity moduli of higher orders

Sharp inequalities are obtained in the space $L_2$, connecting the best approximations of differentiable $2\pi$-periodic functions by trigonometric polynomials with integrals containing the higher-order moduli of continuity of the derivatives of these functions. The Kolmogorov widths of certain clas...

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Bibliographic Details
Date:1991
Main Authors: Shalaev , V. V., Шалаев , В. В.
Format: Article
Language:Russian
Published: Institute of Mathematics, NAS of Ukraine 1991
Online Access:https://umj.imath.kiev.ua/index.php/umj/article/view/9317
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Journal Title:Ukrains’kyi Matematychnyi Zhurnal
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Ukrains’kyi Matematychnyi Zhurnal