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Best Approximations and Widths of Classes of Convolutions of Periodic Functions of High Smoothness

We consider classes of $2\pi$-periodic functions that are representable in terms of convolutions with fixed kernels $\Psi_{\overline{\beta}}$ whose Fourier coefficients tend to zero with the exponential rate. We compute exact values of the best approximations of these classes of functions in a uni...

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Datum:	2005
Hauptverfasser:	Serdyuk, A. S., Сердюк, А. С.
Format:	Artikel
Sprache:	Ukrainisch Englisch
Veröffentlicht:	Institute of Mathematics, NAS of Ukraine 2005
Online Zugang:	https://umj.imath.kiev.ua/index.php/umj/article/view/3655
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!
Назва журналу:	Ukrains’kyi Matematychnyi Zhurnal
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