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On the best polynomial approximation in the space L2 and widths of some classes of functions

We consider the problem of the best polynomial approximation of $2\pi$-periodic functions in the space $L_2$ in the case where the error of approximation $E_{n-1}(f)$ is estimated in terms of the $k$th-order modulus of continuity $\Omega_k(f)$ in which the Steklov operator $S_h f$ is used instead of...

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Datum:	2012
Hauptverfasser:	Vakarchuk, S. B., Zabutnaya, V. I., Вакарчук, С. Б., Забутная, В. И.
Format:	Artikel
Sprache:	Russisch Englisch
Veröffentlicht:	Institute of Mathematics, NAS of Ukraine 2012
Online Zugang:	https://umj.imath.kiev.ua/index.php/umj/article/view/2637
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!
Назва журналу:	Ukrains’kyi Matematychnyi Zhurnal
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