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Exact values of the best (α, β) -approximations of classes of convolutions with kernels that do not increase the number of sign changes

We obtain the exact values of the best $(\alpha , \beta )$-approximations of the classes $K \ast F$ of periodic functions $K \ast f$ such that $f$ belongs to a given rearrangement-invariant set $F$ and $K$ is $2\pi$ -periodic kernel that do not increase the number of sign changes by the subspaces...

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Datum:	2017
Hauptverfasser:	Parfinovych, N. V., Парфинович, Н. В.
Format:	Artikel
Sprache:	Russisch
Veröffentlicht:	Institute of Mathematics, NAS of Ukraine 2017
Online Zugang:	https://umj.imath.kiev.ua/index.php/umj/article/view/1759
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!
Назва журналу:	Ukrains’kyi Matematychnyi Zhurnal
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