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KIAM Preprint № 75, Moscow, 2020
Authors: Belov A.A., Kalitkin N.N., Khokhlachev V.S.
Improved error estimates for an exponentially convergent quadratures
Abstract:
Physicists often need to calculate integrals numerically, and with high accuracy. In recent years, it has been shown that for some practically important classes of functions, it is possible to dramatically increase the accuracy and reduce the complexity of quadratures. The paper describes the corresponding mathematical apparatus with the latest improvements, which reduce the complexity of calculations by hundreds of times or more. Examples of physical problems to which it is well applicable are given.
Keywords:
quadrature, trapezoidal rule, exponential convergence
Publication language: russian,  pages: 24
Research direction:
Mathematical modelling in actual problems of science and technics
Russian source text:
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About authors:
  • Belov Alexander Alexandrovich,  aa.belov@physics.msu.ru,  Faculty of Physics M.V. Lomonosov MSU; PFUR
  • Kalitkin Nikolaj Nikolaevich,  kalitkin@imamod.ruorcid.org/0000-0002-0861-1792KIAM RAS
  • Khokhlachev Valentin Sergeevich,  valentin.mycroft@yandex.ru,  M.V. Lomonosov MSU, Faculty of Physics