scientific article

zbMath0562.41022MaRDI QIDQ3674923

Kamen G. Ivanov

Publication date: 1983

Title: zbMATH Open Web Interface contents unavailable due to conflicting licenses.

zbMATH Keywords

converse theoremsglobal modulus of continuitybest algebraic approximations

Mathematics Subject Classification ID

Continuity and related questions (modulus of continuity, semicontinuity, discontinuities, etc.) for real functions in one variable (26A15) Best approximation, Chebyshev systems (41A50) Approximation by other special function classes (41A30)

Related Items (5)

Exact constants in Jackson-type inequalities for the best mean square approximation in \(L_2(\mathbb{R})\) and exact values of mean \(\nu\)-widths of the classes of functions ⋮ Jackson-type inequalities with generalized modulus of continuity and exact values of the \(n\)-widths for the classes of \((\psi,\beta)\)-differentiable functions in \(L_2\). III ⋮ Volterra-Choquet nonlinear operators ⋮ Best weighted polynomial approximation on the real line; a functional- analytic approach ⋮ Approximation by max-product sampling Kantorovich operators with generalized kernels

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