Quadratures with super power convergence
Journal: Discrete and Continuous Models and Applied Computational Science (Vol.31, No. 2)Publication Date: 2023-06-30
Authors : Aleksandr Belov; Maxim Tintul; Valentin Khokhlachev;
Page : 128-138
Keywords : trapezoid rule; exponential convergence; error estimate; asymptotically sharp estimates;
Abstract
The calculation of quadratures arises in many physical and technical applications. The replacement of integration variables is proposed, which dramatically increases the accuracy of the formula of averages. For infinitely smooth integrand functions, the convergence law becomes super power. It is significantly faster than the power law and is close to exponential one. For integrals with bounded smoothness, power convergence is realized with the maximum achievable order of accuracy.
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Last modified: 2023-07-03 05:47:00