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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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Datum:	1995
Hauptverfasser:	Serdyuk, A. S., Stepanets, O. I., Сердюк, А. С., Степанец, А. И.
Format:	Artikel
Sprache:	Russisch
Veröffentlicht:	Institute of Mathematics, NAS of Ukraine 1995
Online Zugang:	https://umj.imath.kiev.ua/index.php/umj/article/view/5507
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!
Назва журналу:	Ukrains’kyi Matematychnyi Zhurnal
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