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arXiv 1409.6069math.NAcs.NA
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广义Cholesky分解的新的严格扰动界

New rigorous perturbation bounds for the generalized Cholesky factorization

College of Mathematics and Statistics, Chongqing University(重庆大学数学与统计学院)

Hanyu Li, Yanfei Yang

AI总结:

本文提出新的严格扰动界,用于广义Cholesky分解,考虑了矩阵的规范扰动或分量扰动,其中分量扰动形式为广义Cholesky分解算法的回溯舍入误差。这些界比现有界更紧,条件更简单。

摘要:

本文获得了广义Cholesky分解的新的严格扰动界,考虑了给定矩阵的规范扰动或分量扰动,其中分量扰动形式为广义Cholesky分解算法的回溯舍入误差。这些界可以比现有界更紧,而它们成立的条件较为简单和适度。

英文摘要:

Some new rigorous perturbation bounds for the generalized Cholesky factorization with normwise or componentwise perturbations in the given matrix are obtained, where the componentwise perturbation has the form of backward rounding error for the generalized Cholesky factorization algorithm. These bounds can be much tighter than some existing ones while the conditions for them to hold are simple and moderate.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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