Approximation of the classes of generalized Poisson integrals by Fourier sums in metrics of the spaces L_s by A. S. Serdiuk, T. A. Stepaniuk

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Uniform approximations by Fourier sums on the classes of convolutions with generalized Poisson kernels by A. S. Serdiuk, T. A. Stepaniuk

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Estimates of the best orthogonal trigonometric approximations of the classes of convolutions of periodic functions of not high smoothness by A. S. Serdiuk, T. A. Stepaniuk

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Estimates of the best m-term trigonometric approximations of classes of analytic functions by A. S. Serdiuk, T. A. Stepaniuk

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Order Estimates for the Best Orthogonal Trigonometric Approximations of the Classes of Convolutions of Periodic Functions of Low Smoothness by A. S. Serdiuk, T. A. Stepaniuk

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Estimations of the Best Approximations for the Classes of Infinitely Differentiable Functions in Uniform and Integral Metrics by A. S. Serdiuk, T. A. Stepaniuk

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Order Estimates for the Best Approximations and Approximations by Fourier Sums in the Classes of Convolutions of Periodic Functions of Low Smoothness in the Uniform Metric by A. S. Serdiuk, T. A. Stepaniuk

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Order estimates for the best approximation and approximation by Fourier sums of classes of infinitely differentiable functions by A. S. Serdiuk, T. A. Stepaniuk

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Approximation by interpolation trigonometric polynomials in metrics of the spaces Lp on the classes of periodic entire functions by A. S. Serdiuk, I. V. Sokolenko

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An approximation of class of convolutions of periodic functions by linear methods based on their Fourier-Lagrange coefficients by A. S. Serdiuk, I. V. Sokolenko

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Approximation of classes (Ψ, β)-differentiable functions by interpolating trigonometric polynomials by A. S. Serdiuk, I. V. Sokolenko

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Exact Values of Kolmogorov Widths for the Classes of Analytic Functions. II by V. V. Bodenchuk, A. S. Serdiuk

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Exact Values of Kolmogorov Widths for the Classes of Analytic Functions. I by V. V. Bodenchuk, A. S. Serdiuk

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Approximation by Fourier sums in classes of Weyl–Nagy differentiable functions with high exponent of smoothness by A. S. Serdiuk, I. V. Sokolenko

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Order Estimates for the Best Approximations and Approximations by Fourier Sums of the Classes of (ψ, β)-Differential Functions by U. Z. Hrabova, A. S. Serdiuk

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Lebesgue-type inequalities for the de la Vallйe-poussin sums on sets of entire functions by A. P. Musiienko, A. S. Serdiuk

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Lebesgue-type inequalities for the de la Valee-Poussin sums on sets of analytic functions by A. P. Musiienko, A. S. Serdiuk

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Estimates from below for Kolmogorov widths in classes of Poisson integral by A. S. Serdiuk, V. V. Bodenchuk

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Estimates of uniform approximations by Zygmund sums on classes of convolutions of periodic functions by A. S. Serdiuk, U. Z. Hrabova

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Approximation by linear methods of classes of (ш,в)−differentiable functions by A. S. Serdiuk, I. V. Sokolenko

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