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On the approximation of functions from the Hölder class given on a segment by their biharmonic Poisson operators

UDC 517.5 We obtain the exact equality for the upper bounds of deviations of biharmonic Poisson operators on the Hölder classes of functions continuous on the segment $[-1;1]$.

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Bibliographic Details
Date:	2019
Main Authors:	Zhyhallo, K. M., Zhyhallo, T. V., Жигалло, К. М., Жигалло, Т. В.
Format:	Article
Language:	Ukrainian
Published:	Institute of Mathematics, NAS of Ukraine 2019
Online Access:	https://umj.imath.kiev.ua/index.php/umj/article/view/1485
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Journal Title:	Ukrains’kyi Matematychnyi Zhurnal
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