OPTIMAL QUADRATURE FORMULAS FOR FOURIER COEFFICIENTS IN W ( m , m − 1 ) 2 SPACE

Abstract

This paper studies the problem of construction of optimal quadrature formulas in the sense of Sard in the W (m,m−1) 2 [0, 1] space for calculating Fourier coefficients. Using S. L. Sobolev’s method we obtain new optimal quadrature formulas of such type for N + 1 ≥ m, where N + 1 is the number of the nodes. Moreover, explicit formulas for the optimal… (More)

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