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Trudy Instituta Matematiki i Mekhaniki UrO RAN, 2011, Volume 17, Number 3, Pages 300–302
(Mi timm742)
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On relative widths of classes of differentiable functions. III
Yu. N. Subbotinab, S. A. Telyakovskiic a Institute of Mathematics and Mechanics, Ural Branch of the Russian Academy of Sciences
b Ural Federal University
c Steklov Mathematical Institute, Russian Academy of Sciences
Abstract:
A lower estimate is established for the minimum value of the factor $M$ for which the Kolmogorov width $d_n(W_C^r,C)$ and the relative width $K_n(W_C^r,MW_C^j,C)$ of the class of functions $W_C^r$ with respect to the class $MW^j_C$ coincide for $j>r$. The order of this estimate with respect to $n$ is the same as in the upper estimate obtained earlier.
Keywords:
comparison functions, Kolmogorov and relative widths.
Received: 25.01.2011
Citation:
Yu. N. Subbotin, S. A. Telyakovskii, “On relative widths of classes of differentiable functions. III”, Trudy Inst. Mat. i Mekh. UrO RAN, 17, no. 3, 2011, 300–302
Linking options:
https://www.mathnet.ru/eng/timm742 https://www.mathnet.ru/eng/timm/v17/i3/p300
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Abstract page: | 368 | Full-text PDF : | 120 | References: | 71 | First page: | 2 |
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