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Inverse theorems of approximation of regular (in convex polygons) functions by exponential polynomials in the integral metric

Доказаны обратные теоремы приближения регулярных в выпуклых многоугольниках функций экспоненциальными полиномами специального вида в интегральной метрике. Полученные результаты аналогичны известным в случае приближения периодических функций тригонометрическими полиномами....

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Bibliographic Details
Date:	1988
Main Authors:	Melnik , Yu. I., Мельник , Ю. И.
Format:	Article
Language:	Russian
Published:	Institute of Mathematics, NAS of Ukraine 1988
Online Access:	https://umj.imath.kiev.ua/index.php/umj/article/view/9285
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Journal Title:	Ukrains’kyi Matematychnyi Zhurnal
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