A short note on singular values of optimal and superoptimal preconditioned matrices

A short note on singular values of optimal and superoptimal preconditioned matrices
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DOI:
10.1080/00207160701356530
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发表时间:
2007-08
影响因子:
1.8
通讯作者:
X. Jin;Yimin Wei
X. Jin;Yimin Wei
中科院分区:
数学4区
文献类型:
--
作者:
X. Jin;Yimin Wei

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本文证明了:对于任意非奇异矩阵,超优预条件矩阵的奇异值不超过最优预条件矩阵的相应奇异值。
In this short note, we prove that given any nonsingular matrix, the singular values of the superoptimal preconditioned matrix do not exceed the corresponding singular values of the optimal preconditioned matrix.