Stechkin's problem for differential operators and functionals of first and second orders
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Publication:1944314
DOI10.1016/j.jat.2012.12.003zbMath1271.41005OpenAlexW2014456099MaRDI QIDQ1944314
Dmitriy Skorokhodov, Yuliya Babenko
Publication date: 5 April 2013
Published in: Journal of Approximation Theory (Search for Journal in Brave)
Full work available at URL: https://doi.org/10.1016/j.jat.2012.12.003
unbounded operatorextremal problemsbest approximationsharp constantsLandau-Kolmogorov inequalityStechkin's problem
Best approximation, Chebyshev systems (41A50) Inequalities in approximation (Bernstein, Jackson, Nikol'ski?-type inequalities) (41A17)
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