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Publication:3665622
zbMath0517.42009MaRDI QIDQ3665622
S. B. Stechkin, V. T. Gavrilyuk
Publication date: 1978
Title: zbMATH Open Web Interface contents unavailable due to conflicting licenses.
modulus of continuityLebesgue constantstriangular matrixlinear approximation methodcharacteristic numberFavard sums
Best approximation, Chebyshev systems (41A50) Convergence and absolute convergence of Fourier and trigonometric series (42A20) Summability and absolute summability of Fourier and trigonometric series (42A24) Best constants in approximation theory (41A44)
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Approximation in the L metric of summable periodic functions by Fourier sums ⋮ Asymptotic estimates of approximation of continuous periodic functions by Fourier sums ⋮ Suprema of the Fourier coefficients and of certain more general functionals ⋮ Precise constant in Jackson's inequality for continuous periodic functions
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