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Publication:3940262
zbMath0482.42001MaRDI QIDQ3940262
Publication date: 1980
Title: zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Trigonometric approximation (42A10) Continuity and related questions (modulus of continuity, semicontinuity, discontinuities, etc.) for real functions in one variable (26A15) Best approximation, Chebyshev systems (41A50) Diophantine approximation, transcendental number theory (11J99)
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Best polynomial approximations in \(L_{2}\) of classes of \(2{\pi}\)-periodic functions and exact values of their widths ⋮ Exact constants in Jackson-type inequalities and exact values of the widths of some classes of functions in \(L_{2}\) ⋮ \(n\)-widths of certain function classes defined by the modulus of continuity ⋮ Mean approximation of functions on the real axis by algebraic polynomials with Chebyshev-Hermite weight and widths of function classes
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