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
中科院分区:
文献类型:
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作者:
Hisashi Kotakemori;K. Harada;M. Morimoto;H. Niki
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.