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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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