A comparison theorem for the iterative method with the preconditioner (I + S max )

A comparison theorem for the iterative method with the preconditioner (I + S max )
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DOI:
10.1016/s0377-0427(01)00588-x
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发表时间:
2002-08
影响因子:
2.4
通讯作者:
Hisashi Kotakemori;K. Harada;M. Morimoto;H. Niki
Hisashi Kotakemori;K. Harada;M. Morimoto;H. Niki
中科院分区:
数学2区
文献类型:
--
作者:
Hisashi Kotakemori;K. Harada;M. Morimoto;H. Niki

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1991年,Gunawardena等人(Linear Algebra Appl.154 -156(1991)123)报道了带有预条件子(I+S)的改进的Gauss-Seidel方法。在本文中,我们建议使用预条件子(I+Smax)而不是(I+S)。这里,Smaxis仅由A的上三角形部分的每一行的最大元素构成。利用Neumann和Plemmons(Linear Algebra Appl.88/89(1987)559)建立的引理,得到了该方法的比较定理。文中还给出了简单的数值例子。
In 1991, Gunawardena et al. (Linear Algebra Appl. 154–156 (1991) 123) have reported the modified Gauss–Seidel method with a preconditioner (I+S). In this article, we propose to use a preconditioner (I+Smax) instead of (I+S). Here, Smaxis constructed by only the largest element at each row of the upper triangular part of A. By using the lemma established Neumann and Plemmons (Linear Algebra Appl. 88/89 (1987) 559), we get the comparison theorem for the proposed method. Simple numerical examples are also given.