On problems of approximation in \(L_ 2\) spaces

DOI10.1007/BF01875150zbMath0832.42020OpenAlexW2025041457MaRDI QIDQ1333075

V. Pereyra

Publication date: 5 March 1996

Published in: Acta Mathematica Hungarica (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.1007/bf01875150

zbMATH Keywords

order of approximationorthogonal expansionsFourier seriesFourier-Legendre series\((C,1)\)-summability

Mathematics Subject Classification ID

Fourier series in special orthogonal functions (Legendre polynomials, Walsh functions, etc.) (42C10) General harmonic expansions, frames (42C15) Rate of convergence, degree of approximation (41A25)

Cites Work

• Saturation classes of the Cesàro and Abel-Poisson means of Fourier-Legendre series
• On the degree of approximation of functions by Fejér means
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