In this paper, we investigate the problem of the deviation of a function ???? from its de la Vallée-Poussin sums of Fourier series in Morrey spaces defined on the unite circle in terms of the best approximation to ????. Moreover, approximation properties of de la Vallée-Poussin sums of Faber series in Morrey-Smirnov classes of analytic functions, defined on a simply connected domain bounded by a curve satisfying Dini's smoothness condition are obtained.
In this paper, we investigate the problem of the deviation of a function ???? from its de la Vallée-Poussin sums of Fourier series in Morrey spaces defined on the unite circle in terms of the best approximation to ????. Moreover, approximation properties of de la Vallée-Poussin sums of Faber series ...
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Sultan Qaboos University Journal for Science = مجلة جامعة ...