From numerical quadrature to Pade approximation

被引:7
作者
Brezinski, C. [1 ]
机构
[1] Univ Sci & Technol Lille, CNRS, Lab Paul Painleve, UFR Math Pures & Appliquees,UMR 8524, F-59655 Villeneuve Dascq, France
关键词
Pade approximantion; Quadrature; Convergence acceleration; Extrapolation; ORTHOGONAL POLYNOMIALS; GAUSS QUADRATURE; CLENSHAW-CURTIS; ERROR; FORMULAS;
D O I
10.1016/j.apnum.2010.06.001
中图分类号
O29 [应用数学];
学科分类号
070104 ;
摘要
The paper reviews the relation between Pade-type approximants of a power series and interpolatory quadrature formulae with free nodes, and between Pade approximants and Gaussian quadrature methods. Then, it is shown how the Kronrod procedure and the anti-Gaussian quadrature methods could be used for estimating the error in Pade approximation. The epsilon-algorithm for accelerating the convergence of sequences, and computing recursively Parte approximants is evoked, and its error estimated by the same procedures. Finally, the case of series of functions is considered. Considerations on further research topics end the paper. (C) 2010 IMACS. Published by Elsevier B.V. All rights reserved.
引用
收藏
页码:1209 / 1220
页数:12
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