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Best approximation by holomorphic functions. Application to the best polynomial approximation of classes of holomorphic functions

We find necessary and sufficient conditions under which a real function from $L_p(\mathbb{T}),\; 1 \leq p < \infty$, is badly approximable by the Hardy subspace $H_p^0: = \{f \in H_p:\; F(0) = 0\}$. In a number of cases, we obtain exact values for the best approximations in the mean of funct...

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Datum:	2007
Hauptverfasser:	Savchuk, V. V., Савчук, В. В.
Format:	Artikel
Sprache:	Ukrainisch Englisch
Veröffentlicht:	Institute of Mathematics, NAS of Ukraine 2007
Online Zugang:	https://umj.imath.kiev.ua/index.php/umj/article/view/3369
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!
Назва журналу:	Ukrains’kyi Matematychnyi Zhurnal
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