The best approximation to a class of functions of several variables by another class and related extremum problems

DOI10.1007/BF02314836zbMath0921.41011MaRDI QIDQ1290805

Vitalii Arestov

Publication date: 30 September 1999

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

zbMATH Keywords

modulus of continuitybest approximationconvolution operatorlinear operatorfunction spaceStechkin problemfunction class

Mathematics Subject Classification ID

Approximation by operators (in particular, by integral operators) (41A35)

Related Items (3)

The Landau-Kolmogorov problem for the Laplace operator on a ball ⋮ Approximation of derivatives of analytic functions from one Hardy class by another Hardy class ⋮ Inequalities of Hardy-Littlewood-Pólya type for functions of operators and their applications

Cites Work

• Best approximation of partial differential operators
• Best approximation of unbounded operators by bounded ones
• Best approximation of linear operators
• On the best approximation of the differentiation operator on the half- line
• Approximation of unbounded operators by bounded operators and related extremal problems
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