Абсолютная суммируемость рядов Фурье функции из классов Бесова af S. Bitimkhan Bitimkhan

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Hardy-Littlewood theorem for series with general monotone coefficients af S. Bitimkhan

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Generalization of the Hardy-Littlewood theorem on Fourier series af S. Bitimkhan

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Generalization of the Hardy-Littlewood theorem on Fourier series af S. Bitimkhan

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Generalization of one theorem of F. Riesz to some other spaces af S. Bitimkhan, D.T. D.T.

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Best approximation by «angle» and the absolute Cesàro summability of double Fourier series af S. Bitimkhan, O. Mekesh

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Partial best approximations and the absolute Cesaro summability of multiple Fourier series af S. Bitimkhan, D.T. Alibieva

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Partial best approximations and the absolute Cesaro summability of multiple Fourier series af S. Bitimkhan, D.T. Alibieva

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