| Some New Perturbation Bounds for Subunitary Polar Factors |
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| 引用本文： | Wen LI. Some New Perturbation Bounds for Subunitary Polar Factors[J]. 数学学报(英文版), 2005, 21(6): 1515-1520. DOI: 10.1007/s10114-004-0478-0 |
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| 作者姓名： | Wen LI |
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| 作者单位： | Department of Mathematics, South China Normal University, Guangzhou 510631, P. R. China |
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| 基金项目： | This work is supported in part by the Natural Science Foundation of Guangdong Province （31496）, Natural Science Foundation of University of Teachers of Guangdong Province （0119） and Excellent Talents Foundation of Guangdong Province （Q02084） |
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| 摘 要： |
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| 关 键 词： | 扰动 极性因子 Q范数 复合矩阵 |
| 收稿时间： | 2003-04-01 |
| 修稿时间： | 2003-04-012003-10-10 |
Some New Perturbation Bounds for Subunitary Polar Factors |
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| Wen Li. Some New Perturbation Bounds for Subunitary Polar Factors[J]. Acta Mathematica Sinica(English Series), 2005, 21(6): 1515-1520. DOI: 10.1007/s10114-004-0478-0 |
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| Authors: | Wen Li |
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| Affiliation: | (1) Department of Mathematics, South China Normal University, Guangzhou 510631, P. R. China |
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| Abstract: | In this paper, we present some new perturbation bounds for subunitary polar factors in a special unitarily invariant norm called a Q-norm. Some recent results in the Frobenius norm and the spectral norm are extended to the Q-norm on one hand. On the other hand we also present some relative perturbation bounds for subunitary polar factors. |
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| Keywords: | Perturbation Q-norm Subunitary polar factor |
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