Geodesic
Estimates for the widths of weighted Sobolev classes
Sbornik. Mathematics, Tome 201 (2010) no. 7, pp. 947-984

Voir la notice de l'article provenant de la source Math-Net.Ru

Estimates for the Kolmogorov widths in the $L_{q,v}$-metric of weighted Sobolev classes as well as for the approximation numbers of the corresponding embedding operators are found. Bibliography: 33 titles.
Keywords: Kolmogorov widths, approximation numbers, weighted Sobolev classes, Riemann-Liouville operators. 
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     author = {A. A. Vasil'eva},
     title = {Estimates for the widths of weighted {Sobolev} classes},
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A. A. Vasil'eva. Estimates for the widths of weighted Sobolev classes. Sbornik. Mathematics, Tome 201 (2010) no. 7, pp. 947-984. http://geodesic.mathdoc.fr/item/SM_2010_201_7_a1/