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Conditions of Extremality of an Admissible Element for the Problem of Best Simultaneous Approximation in the Sense of the Squared Norm Of Several Elements of a Linear Normed Space by a Subset of this Space

An important class in approximation theory is formed by problems of best simultaneous approximation of several elements of a linear normed space by a subset of this space. The problem of best simultaneous approximation of several elements of a linear normed space by a subset of this space consists i...

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Bibliographic Details
Date:	2026
Main Author:	Гудима, Уляна
Format:	Article
Language:	Ukrainian
Published:	Кам'янець-Подільський національний університет імені Івана Огієнка 2026
Online Access:	https://mcm-math.kpnu.edu.ua/article/view/354647
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Journal Title:	Mathematical and computer modelling. Series: Physical and mathematical sciences

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Mathematical and computer modelling. Series: Physical and mathematical sciences

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