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Quadratures with Superpower Convergence

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Bulletin of the Russian Academy of Sciences: Physics Aims and scope

Abstract

It is suggested that changing the variables of integration in quadrature calculations greatly improves the accuracy of the rule of means. The law of convergence becomes a superpower for infinitely smooth integrand functions. Its rate is much faster than that of a power law and is close to exponential. Power law convergence is achieved with the maximum attainable order of accuracy for integrand functions of limited smoothness.

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Funding

This work was supported by the Russian Science Foundation, project no. 22-71-00028.

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Correspondence to M. A. Tintul.

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The authors declare they have no conflicts of interest.

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Translated by O. Ponomareva

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Tintul, M.A., Khokhlachev, V.S. & Belov, A.A. Quadratures with Superpower Convergence. Bull. Russ. Acad. Sci. Phys. 86, 1350–1354 (2022). https://doi.org/10.3103/S1062873822110302

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  • DOI: https://doi.org/10.3103/S1062873822110302

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