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On lower bounds for the widths of classes of functions defined by integral moduli of continuity

We establish lower bounds for the Kolmogorov widths d 2n-1(W r H 1 ω .L p ) and Gel’fand widths d 2n-1(W r H 1 ω .L p ) of the classes of functions W r H 1 ω with a convex integral modulus of continuity ω(t).

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Datum:	2000
Hauptverfasser:	Derets, E. V., Дерец, Е. В.
Format:	Artikel
Sprache:	Russisch Englisch
Veröffentlicht:	Institute of Mathematics, NAS of Ukraine 2000
Online Zugang:	https://umj.imath.kiev.ua/index.php/umj/article/view/4421
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Назва журналу:	Ukrains’kyi Matematychnyi Zhurnal
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