Approximation of \((\overline\psi,\overline\beta)\)-differentiable periodic functions of many variables

DOI10.1007/BF01061011zbMath0802.42007OpenAlexW2028078355MaRDI QIDQ1332067

P. V. Zaderej

Publication date: 26 September 1994

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

Full work available at URL: https://doi.org/10.1007/bf01061011

zbMATH Keywords

trigonometric polynomialsbest approximationhyperbolic crossesmixed generalized derivative

Mathematics Subject Classification ID

Best approximation, Chebyshev systems (41A50) Fourier series and coefficients in several variables (42B05)

Cites Work

• Approximation by triangular Fourier sums on classes of continuous periodic functions of two variables
• Integrability conditions of multiple trigonometric series
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