On existence of a best uniform approximation of a function in two variables by the sums \(\varphi (x)+ \psi (y)\)
type: Item
instance of: scholarly article
title: On existence of a best uniform approximation of a function in two variables by the sums \(\varphi (x)+ \psi (y)\)
zbMATH Open document ID: 0855.41021
DOI: 10.1007/BF02107327
author: A. L. Garkavi
author: V. A. Medvedev
author: S. Ya. Khavinson
published in: Siberian Mathematical Journal
publication date: 1996-10-15T00:00:00Z
review text: This paper is concerned with the existence of a best uniform approximation to a real function in two variables by the sums of functions in one variable. The authors present geometric conditions imposed on the domain of definition of functions which guarantee existence for a best approximation. Obtained results are demonstrated by some examples.
Mathematics Subject Classification ID: 41A50
zbMATH DE Number: 923538
zbMATH Keywords: function in two variables
zbMATH Keywords: best approximation
reviewed by: Karel Najzar
MaRDI profile type: Publication
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full work available at URL: https://doi.org/10.1007/bf02107327
OpenAlex ID: W1972376361
description: scientific article; zbMATH DE number 923538