Order equalities for some functionals and their application to the estimation of the best $n$-term approximations and widths by Shydlich, A. L., Шидліч, А. Л.

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Saturation of the linear methods of summation of Fourier series in the spaces S pφ by Shydlich, A. L., Шидліч, А. Л.

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On Saturation of Linear Summation Methods for Fourier Series in the Spaces $S_{\varphi} ^p$ by Shydlich, A. L., Шидліч, А. Л.

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On some properties of convex functions by Stepanets, O. I., Shydlich, A. L., Степанець, О. І., Шидліч, А. Л.

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On one extremal problem for positive series by Stepanets, O. I., Shydlich, A. L., Степанець, О. І., Шидліч, А. Л.

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Best $n$-Term Approximations by Λ-Methods in the Spaces $S_ϕ^p$ by Stepanets, O. I., Shydlich, A. L., Степанець, О. І., Шидліч, А. Л.

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Direct and inverse theorems on the approximation of 2π -periodic functions by Taylor – Abel – Poisson operators by Prestin, J., Savchuk, V. V., Shydlich, A. L., Престін, Ю., Савчук, В. В., Шидліч, А. Л.

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On some new criteria for infinite differentiability of periodic functions by Serdyuk, A. S., Stepanets, O. I., Shydlich, A. L., Сердюк, А. С., Степанець, О. І., Шидліч, А. Л.

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Classification of infinitely differentiable periodic functions by Serdyuk, A. S., Stepanets, O. I., Shydlich, A. L., Сердюк, А. С., Степанец, А. И., Шидлич, А. Л., Сердюк, А. С., Степанец, А. И., Шидлич, А. Л.

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Exact constants in Jackson-type inequalities for $L_2$-approximation on an axis by Doronin, V. G., Ligun, A. A., Serdyuk, A. S., Shydlich, A. L., Доронин, В. Г., Лигун, А. А., Сердюк, А. С., Шидлич, А. Л., Доронин, В. Г., Лигун, А. А., Сердюк, А. С., Шидлич, А. Л.

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Vladislav Fedorovych Babenko (to his 75th birthday) by Motorny, V. P., Shevchuk, I. O., Vakarchuk, S. B., Korenovskyi, A. O., Kofanov, V. O., Parfinovych, N. V., Pichugov, S. O., Romanyuk, A. S., Savchuk, V. V., Serdyuk, A. S., Skorokhodov, D. S., Sokolenko, I. V., Shydlich, A. L., Моторний, В. П., Шевчук, І. О., Вакарчук, С. Б., Кореновський, А. О., Кофанов, В. О., Парфінович, Н. В., Пічугов, С. О., Романюк, А. С., Савчук, В. В., Сердюк, А. С., Скороходов, Д. С., Соколенко, І. В., Шидліч, А. Л., Shidlich, Andrii

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