Optimal perturbation bounds for the core inverse

Optimal perturbation bounds for the core inverse
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DOI:
10.1016/j.amc.2018.04.059
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发表时间:
2018-11
期刊:
Appl. Math. Comput.
影响因子:
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通讯作者:
Haifeng Ma
Haifeng Ma
中科院分区:
其他
文献类型:
--
作者:
Haifeng Ma

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在这篇简短的文章中,我们研究了核心逆的一些扰动特性。我们给出了在一定条件下核心逆矩阵的封闭形式和扰动界,扩展了非奇异矩阵扰动的经典结果。我们对核心逆的扰动的表达式很简单,并且扰动界限很尖锐。
In this short note, we study some perturbation properties of the core inverse. We present the closed form and perturbation bounds for the core inverse under some conditions, which extend the classical result on the perturbation of the nonsingular matrix. Our expressions for the perturbation of the core inverse are simple and perturbation bounds are sharp.