The superconvergence of Newton-Cotes rules for the Hadamard finite-part integral on an interval
Research output: Journal Publications and Reviews (RGC: 21, 22, 62) › 21_Publication in refereed journal › peer-review
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Detail(s)
Original language | English |
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Pages (from-to) | 143-165 |
Journal / Publication | Numerische Mathematik |
Volume | 109 |
Issue number | 1 |
Publication status | Published - Mar 2008 |
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Abstract
We study the general (composite) Newton-Cotes rules for the computation of Hadamard finite-part integral with the second-order singularity and focus on their pointwise superconvergence phenomenon, i.e., when the singular point coincides with some a priori known point, the convergence rate is higher than what is globally possible. We show that the superconvergence rate of the (composite) Newton-Cotes rules occurs at the zeros of a special function and prove the existence of the superconvergence points. Several numerical examples are provided to validate the theoretical analysis. © 2007 Springer-Verlag.
Citation Format(s)
The superconvergence of Newton-Cotes rules for the Hadamard finite-part integral on an interval. / Wu, Jiming; Sun, Weiwei.
In: Numerische Mathematik, Vol. 109, No. 1, 03.2008, p. 143-165.Research output: Journal Publications and Reviews (RGC: 21, 22, 62) › 21_Publication in refereed journal › peer-review