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检索条件"主题词=approximation numbers"
3 条 记 录,以下是1-10 订阅
Estimates of approximation numbers and Applications
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Acta Mathematica Sinica,English Series 2012年 第9期28卷 1883-1896页
作者: Veli SHAKHMUROV Department of Electronics Engineering and Communication Okan University
In this study, the estimates of approximation numbers of embedding operators in weighted spaces have been analyzed. These estimates depend on orders of differential operators, dimensions of function spaces and weighte... 详细信息
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STRONG EQUIVALENCES OF approximation numbers AND TRACTABILITY OF WEIGHTED ANISOTROPIC SOBOLEV EMBEDDINGS
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Acta Mathematica Scientia 2020年 第6期40卷 1765-1782页
作者: Jidong HAO Heping WANG School of Mathematical Sciences Capital Normal UniversityBeijing 100048China
In this article,we study multivariate approximation defined over weighted anisotropic Sobolev spaces which depend on two sequences a={a j}j≥1 and b={b j}j≥1 of positive *** obtain strong equivalences of the approxim... 详细信息
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Mapping Properties of Fourier Transforms,Revisited
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Acta Mathematica Sinica,English Series 2025年 第1期41卷 231-254页
作者: Dorothee D.Haroske Leszek Skrzypczak Hans Triebel Institute of Mathematics Friedrich Schiller University Jena07737 JenaGermany Faculty of Mathematics&Computer Science Adam Mickiewicz Universityul.Uniwersytetu Pozna´nskiego 461-614 Pozna´nPoland
The paper deals with continuous and compact mappings generated by the Fourier transform between distinguished Besov spaces B_(p)^(s)(R^(n))=B_(p,p)^(s)(R^(n)),1≤p≤∞,and between Sobolev spaces Hs p(R^(n)),1 详细信息
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