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Best trigonometric and bilinear approximations for the classes of $(ψ, β)$ -differentiable periodic functions

We establish the exact-order estimates for the best $m$-term trigonometric approximations of the classes $L^{\psi}_{\beta, 1}$ in the space $L_q,\; 2 < q < \infty$. We also determine the exact orders of the best bilinear approximations for the classes of functions of two variables gen...

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Bibliographic Details
Date:	2016
Main Authors:	Shkapa, V. V., Шкапа, В. В.
Format:	Article
Language:	Ukrainian
Published:	Institute of Mathematics, NAS of Ukraine 2016
Online Access:	https://umj.imath.kiev.ua/index.php/umj/article/view/1846
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Journal Title:	Ukrains’kyi Matematychnyi Zhurnal
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