Marchaud’s Inequality for Multiple Modules of Continuity in Metric Spaces von Pichugov, S. A.

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Multiple Modules of Continuity and the Best Approximations of Periodic Functions in Metric Spaces von Pichugov, S. A.

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Erratum to: Sharp Constant in Jackson’s Inequality with Modulus of Smoothness for Uniform Approximations of Periodic Functions von Pichugov, S. A.

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Some Properties of the Moduli of Continuity of Periodic Functions in Metric Spaces von Pichugov, S. A.

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Concave Shells of Continuity Modules von Pichugov, S. A.

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Nikol’skii–Stechkin-Type Inequalities for the Increments of Trigonometric Polynomials in Metric Spaces von Pichugov, S. A.

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Exact constants in Jackson inequalities for periodic differentiable functions in the space L von Pichugov, S. A.

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Sharp constant in Jackson’s inequality with modulus of smoothness for uniform approximations of periodic functions von Pichugov, S. A.

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Smoothness of functions in the metric spaces Lψ von Pichugov, S. A.

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On the Jackson theorem for periodic functions in metric spaces with integral metric. II von Pichugov, S. A.

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Inverse Jackson theorems in spaces with integral metric von Pichugov, S. A.

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Inequalities for trigonometric polynomials in spaces with integral metric von Pichugov, S. A.

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Lower bounds for the deviations of the best linear methods of approximation of continuous functions by trigonometric polynomials von Pichugov, S. A.

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Письмо в редакцию von Pichugov, S A

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SEQUENCES OF OPERATORS BOUNDED IN MEASURE von Pichugov, S A

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Kolmogorov-type inequalities for norms of Riesz derivatives of functions of several variables with Laplacian bounded in L∞ and related problems von Babenko, V. F., Parfinovich, N. V., Pichugov, S. A.

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Sharp estimates of the norms of fractional derivatives of functions of several variables satisfying Hölder conditions von Babenko, V. F., Pichugov, S. A.

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Sharp Kolmogorov-type inequalities for norms of fractional derivatives of multivariate functions von Babenko, V. F., Parfinovych, N.V., Pichugov, S. A.

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On Kolmogorov-type inequalities for fractional derivatives of functions of two variables von Babenko, V. F., Pichugov, S. A.

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Точные константы в неравенствах Джексона для периодических дифференцируемых функций в пространстве $L_\infty... von Пичугов, С А, Pichugov, S A

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