Trigonometric diameters of the Sobolev classes \(W^ r_ p\) in the space \(L_ q\)
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Publication:1091553
DOI10.1007/BF01159113zbMath0623.41024MaRDI QIDQ1091553
Publication date: 1986
Published in: Mathematical Notes (Search for Journal in Brave)
Approximation by arbitrary nonlinear expressions; widths and entropy (41A46) Trigonometric polynomials, inequalities, extremal problems (42A05)
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