吉林大学学报(理学版)

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两个矩阵之和的Drazin逆的表示

郭丽1,2, 邹红林1, 杜文明2   

  1. 1. 东南大学 数学系, 南京 210096; 2. 北华大学 数学与统计学院, 吉林 吉林 132013
  • 收稿日期:2016-06-27 出版日期:2016-09-26 发布日期:2016-09-19
  • 通讯作者: 郭丽 E-mail:guomingli95@163.com

Representations for Drazin Inverses of Sum of Two  Matrices

GUO Li1,2, ZOU Honglin1, DU Wenming2   

  1. 1. Department of Mathematics, Southeast University, Nanjing 210096, China;2. School of Mathematics and Statistics, Beihua University, Jilin 132013, Jilin Province, China
  • Received:2016-06-27 Online:2016-09-26 Published:2016-09-19
  • Contact: GUO Li E-mail:guomingli95@163.com

摘要:

考虑两个矩阵之和的Drazin逆的表示, 对于n阶矩阵A,B, 在ADB=0, ABD=0, BπABAAπ=0, BπAB2Aπ=0的条件下, 利用矩阵的核心幂零分解给出A+B的Drazin逆的表达式.

关键词: Drazin逆, 指数, 幂零矩阵

Abstract:

We considered representations for Drazin inverses of the sum of two matrices,  under the condition of ADB=0, ABD=0, BπABAAπ=0, BπAB2Aπ=0 for the n order matrix [WTHX]A[WT] and B. We gave representations for Drazin inverses of A+B by using the corenilpotent decomposition of matrices.

Key words: Drazin inverse, index, nilpotent matrix

中图分类号: 

  • O151.21