Approximation of a function of two variables by a sum of products of functions of one variable in the Sobolev spaces
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Publication:756061
zbMath0722.41038MaRDI QIDQ756061
Publication date: 1990
Published in: Moscow University Mathematics Bulletin (Search for Journal in Brave)
Abstract approximation theory (approximation in normed linear spaces and other abstract spaces) (41A65) Multidimensional problems (41A63)
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