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On a criterion of rationality for a series in orthogonal polynomials

We present a criterion of rationality for a function determined by its expansion in a series in orthogonal polynomials. This criterion can be regarded as an analog of the well-known Kronecker criterion of rationality for functions given by power series.

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Bibliographic Details
Date:	2010
Main Authors:	Buslaev, V. I., Буслаев, В. И.
Format:	Article
Language:	Russian English
Published:	Institute of Mathematics, NAS of Ukraine 2010
Online Access:	https://umj.imath.kiev.ua/index.php/umj/article/view/2943
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Journal Title:	Ukrains’kyi Matematychnyi Zhurnal
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