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Approximation of $(\bar \psi ,\bar \beta )$ -differentiable periodic functions of many variables

Best-approximation estimates are obtained in the integral and uniform metric on classes of periodic functions of many variables, which are defined by restrictions imposed on the mixed generalized derivative introduced by Stepanets. In this case, theharmonic of trigonometric polynomials, which are us...

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Bibliographic Details
Date:	1993
Main Authors:	Zaderei, P. V., Задерей, П. В.
Format:	Article
Language:	Russian English
Published:	Institute of Mathematics, NAS of Ukraine 1993
Online Access:	https://umj.imath.kiev.ua/index.php/umj/article/view/5818
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Journal Title:	Ukrains’kyi Matematychnyi Zhurnal
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