Letter to the editor: Diameters and quadrature formulas on periodic function classes, conjugate to the Sobolev classes

DOI10.1007/BF02110571zbMath0845.42002OpenAlexW4255544589MaRDI QIDQ1905258

Yanyan Li

Publication date: 1 February 1996

Published in: Mathematical Notes (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.1007/bf02110571

zbMATH Keywords

Kolmogorov widthsSobolev classes1-periodic functionsquadrature formulas with positive weights

Mathematics Subject Classification ID

Trigonometric approximation (42A10) Inequalities in approximation (Bernstein, Jackson, Nikol'ski?-type inequalities) (41A17) Approximate quadratures (41A55) Numerical quadrature and cubature formulas (65D32) Approximation by arbitrary nonlinear expressions; widths and entropy (41A46)

Related Items (2)

Upper bounds for uniform Lebesgue constants of interpolation periodic sourcewise representable splines ⋮ Exact values of Kolmogorov widths of classes of Poisson integrals

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