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JOURNALS // Vestnik KRAUNC. Fiziko-Matematicheskie Nauki // Archive

Vestnik KRAUNC. Fiz.-Mat. Nauki, 2020 Volume 32, Number 3, Pages 75–101 (Mi vkam421)

MATHEMATICS

Euler-Maclaurin type optimal formulas for numerical integration in Sobolev space

A. R. Hayotova, F. A. Nuralieva, R. I. Parovikb, Kh. M. Shadimetova

a V. I. Romanovskiy Institute of Mathematics, Uzbekistan Academy of Sciences
b Vitus Bering Kamchatka State University

Abstract: In the present paper the problem of construction of optimal quadrature formulas in the sense of Sard in the space $L_2(m)(0,1)$ is considered. Here the quadrature sum consists of values of the integrand at nodes and values of the first and the third derivatives of the integrand at the end points of the integration interval. The coefficients of optimal quadrature formulas are found and the norm of the optimal error functional is calculated for arbitrary natural number $N \ge m-3$ and for any $m \ge 4$ using S. L. Sobolev method which is based on the discrete analogue of the differential operator $d^{2m}/dx^{2m}$. In particular, for $m = 4$ and $m = 5$ optimality of the classical Euler-Maclaurin quadrature formula is obtained. Starting from $m=6$ new optimal quadrature formulas are obtained. At the end of this work some numerical results are presented.

UDC: 519.644

MSC: 65D32

Language: English

DOI: 10.26117/2079-6641-2020-32-3-75-101



© Steklov Math. Inst. of RAS, 2024