Extensions to the Jackson-type and Landau-Kolmogorov-type sharp inequalities for derivatives of low order.

zbMath1096.41012MaRDI QIDQ556775

O. L. Vinogradov, V. V. Zhuk

Publication date: 23 June 2005

Published in: Vestnik St. Petersburg University. Mathematics (Search for Journal in Brave)

zbMATH Keywords

modulus of continuityseminormsharp Jackson inequalitiessharp Landau-Kolmogorov inequalities

Mathematics Subject Classification ID

Inequalities in approximation (Bernstein, Jackson, Nikol'ski?-type inequalities) (41A17) Approximation by polynomials (41A10)

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