scientific article; zbMATH DE number 1865470

zbMath1019.41014MaRDI QIDQ4791971

Yu. I. Kharkevych, K. N. Zhygallo

Publication date: 6 February 2003

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zbMATH Keywords

asymptotic decompositionFavard constantsKolmogorov-Nikol'skij problemharmonic Poisson integral

Mathematics Subject Classification ID

Harmonic, subharmonic, superharmonic functions in two dimensions (31A05) Inequalities in approximation (Bernstein, Jackson, Nikol'ski?-type inequalities) (41A17) Approximation by operators (in particular, by integral operators) (41A35)

Related Items (5)

Exact estimation of an approximation of some classes of differentiable functions by convolution operators ⋮ Approximate characteristics of generalized Poisson operators on Zygmund classes ⋮ Exact values of the approximations of differentiable functions by Poisson-type integrals ⋮ Some asymptotic properties of the solutions of Laplace equations in a unit disk ⋮ Complete asymptotics of the approximation of function from the Sobolev classes by the Poisson integrals

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