Representations for the Drazin inverses of 2 × 2 block matrices

Representations for the Drazin inverses of 2 × 2 block matrices
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DOI:
10.1016/j.amc.2010.08.019
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发表时间:
2010-11
期刊:
Appl. Math. Comput.
影响因子:
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通讯作者:
Li Guo;Xiankun Du
Li Guo;Xiankun Du
中科院分区:
其他
文献类型:
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作者:
Li Guo;Xiankun Du

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设M表示2×2块复矩阵ABCD,其中A和D是方阵,不一定具有相同的阶数。本文给出了当I=0,1,…,BdiC=0时M的Drazin逆的显式表示,n−1,其中n为D的阶数。
Let M denote a 2×2 block complex matrix ABCD, where A and D are square matrices, not necessarily with the same orders. In this paper explicit representations for the Drazin inverse of M are presented under the condition that BDiC=0 for i=0,1,…,n−1, where n is the order of D.