scientific article

zbMath0743.41002MaRDI QIDQ4003551

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Publication date: 18 September 1992

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zbMATH Keywords

Bernstein polynomialswidthsApproximation theoryFunctional analysisBest approximation of analytic functions

Mathematics Subject Classification ID

Collections of articles of miscellaneous specific interest (00B15) Best approximation, Chebyshev systems (41A50) Abstract approximation theory (approximation in normed linear spaces and other abstract spaces) (41A65) Approximation by polynomials (41A10) Approximation by positive operators (41A36) Approximation by arbitrary nonlinear expressions; widths and entropy (41A46) Proceedings, conferences, collections, etc. pertaining to functional analysis (46-06) Proceedings, conferences, collections, etc. pertaining to approximations and expansions (41-06)

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Jackson-type inequalities with generalized modulus of continuity and exact values of the \(n\)-widths for the classes of \((\psi,\beta)\)-differentiable functions in \(L_2\). I

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