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The discrete Fourier-transform and \(L^p\) approximation of functions. (English) Zbl 0307.41016

MSC:

41A35 Approximation by operators (in particular, by integral operators)
42A38 Fourier and Fourier-Stieltjes transforms and other transforms of Fourier type
41A15 Spline approximation
41A25 Rate of convergence, degree of approximation
41A05 Interpolation in approximation theory
41A65 Abstract approximation theory (approximation in normed linear spaces and other abstract spaces)
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