上海大学学报(自然科学版) ›› 2012, Vol. 18 ›› Issue (3): 261-264.doi: 10.3969/j.issn.1007-2861.2012.03.009

• 论文 • 上一篇    下一篇

广义逆函数值Padé逼近行列式的一个新算法

吴永生1,2,顾传青1   

  1. (1.上海大学 理学院,上海 200444; 2.巢湖学院 数学系,安徽 巢湖 238000)
  • 出版日期:2012-06-30 发布日期:2012-06-30
  • 通讯作者: 顾传青(1955~),男,教授,博士生导师,博士,研究方向为数值有理逼近. E-mail:cqgu@staff.shu.edu.cn
  • 基金资助:

    上海市自然科学基金资助项目(10ZR1410900);上海市重点学科建设资助项目(S30104)

A New Algorithm for Computing the Determinant of  Generalized Inverse Function Valued Padé Approximants

WU Yong-sheng1,2,GU Chuan-qing1   

  1. (1. College of Sciences, Shanghai University, Shanghai 200444, China;2. Department of Mathematics, Chaohu College, Chaohu 238000, Anhui, China)
  • Online:2012-06-30 Published:2012-06-30

摘要: 应用Arnoldi方法求解系数为反对称矩阵的线性方程组,给出广义逆函数值Padé逼近行列式公式的一种新的计算方法,并由此提供计算型为[n/2k]f(x,λ)的广义逆函数值Padé逼近的几个算法.通过实例说明方法的有效性.

关键词: Arnoldi方法, Schur补, 逼近, 反对称方程组, 广义逆, 函数值Padé

Abstract: This paper caculates the determinant appearing in the construction of generalized inverse functionvalued Padé approximants. The main tools used are Arnoldi’s process for solving skewsymmetric system. Several algorithms are presented to compute the[n/2k]f(x,λ)type generalized inverse functionvalued Padé approximant. A numerical example is given to show effectiveness of the presented method.

Key words: approximant, Arnoldi’s process, function-valued Padé, generalized inverse, Schur complement, skew-symmetric system

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