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On the order of growth of rectangular partial sums of double orthogonal series

We obtain estimates of the order of growth of rectangular partial sums of double orthogonal series and establish their unimprovability on the set of all double orthogonal systems.

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Bibliographic Details
Date:	1999
Main Authors:	Andrienko, V. A., Андриенко, В. А.
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/4728
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Journal Title:	Ukrains’kyi Matematychnyi Zhurnal
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