Estimates of the values of \(n\)-widths of classes of analytic functions in the weight spaces \(H_{2,\gamma}(D)\)

DOI10.1134/S0001434620110218zbMath1454.42024OpenAlexW3110972115MaRDI QIDQ2217280

Yanyan Li

Publication date: 29 December 2020

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

Full work available at URL: https://doi.org/10.1134/s0001434620110218

zbMATH Keywords

weight functionFourier seriesFourier coefficientgeneralized modulus of continuity\(n\)-widthmajorantHadamard compositionorthogonal system of polynomials

Mathematics Subject Classification ID

Fourier and Fourier-Stieltjes transforms and other transforms of Fourier type (42B10) Orthogonal functions and polynomials, general theory of nontrigonometric harmonic analysis (42C05) Approximation by arbitrary nonlinear expressions; widths and entropy (41A46)

Related Items

The best approximation and the values of the widths of some classes of analytical functions in the weighted Bergman space B_(2,γ) ⋮ \(K\)-functionals and extreme problems of the approximation theory for classes of analytic functions in a circle. I

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