Estimates for approximations by Fourier sums, best approximations and best orthogonal trigonometric approximations of the classes of (ψ, β)-differentiable functions

2015/10/10 by A. S. Serdyuk, Serdyuk, A. S., Тетяна Степанюк +1
Mathematics · #Classical Analysis and ODEs (math.CA) #FOS: Mathematics #Mathematical Approximation and Integration

paper · pdf · doi:10.48550/arxiv.1510.02959

openalex publication_date 2015/10/10 · openalex created_date 2024/04/11 · openalex updated_date 2026/07/28

Abstract

We obtain the exact-order estimates for approximations by Fourier sums, best approximations and best orthogonal trigonometric approximations in metrics of spaces L_s, 1≤ s

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