Lower bounds for widths of classes of convolutions of periodic functions in the metrics of $C$ and $L$
We give new sufficient conditions for kernels to belong to the set $C_{y, 2n}$ introduced by Kushpel'. These conditions give the possibility of extending the set of kernels belonging to $C_{y, 2n}$. On the basis of these results, we obtain lower bounds for the Kolmogorov widths of classes o...
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| Date: | 1995 |
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| Main Authors: | , , , |
| Format: | Article |
| Language: | Russian |
| Published: |
Institute of Mathematics, NAS of Ukraine
1995
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| Online Access: | https://umj.imath.kiev.ua/index.php/umj/article/view/5507 |
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| Journal Title: | Ukrains’kyi Matematychnyi Zhurnal |
| Download file: |  |