On \(K\)-functionals and exact values of \(n\)-widths of some classes in the spaces \(C(2\pi)\) and \(L_1(2\pi)\)
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Publication:1810099
DOI10.1023/A:1014823613463zbMath1021.41017MaRDI QIDQ1810099
Publication date: 15 June 2003
Published in: Mathematical Notes (Search for Journal in Brave)
Spaces of measurable functions ((L^p)-spaces, Orlicz spaces, Köthe function spaces, Lorentz spaces, rearrangement invariant spaces, ideal spaces, etc.) (46E30) Approximation by arbitrary nonlinear expressions; widths and entropy (41A46) Abstract interpolation of topological vector spaces (46M35)
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On some extremal problems of approximation theory of functions on the real axis. II ⋮ \(K\)-functionals and extreme problems of the approximation theory for classes of analytic functions in a circle. II ⋮ \(K\)-functionals and extreme problems of the approximation theory for classes of analytic functions in a circle. I ⋮ Mean approximation of functions on the real axis by algebraic polynomials with Chebyshev-Hermite weight and widths of function classes
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