江汉大学学报(自然科学版) ›› 2019, Vol. 47 ›› Issue (5): 389-394.doi: 10.16389/j.cnki.cn42-1737/n.2019.05.001

• 数学 • 上一篇    下一篇

关于环上矩阵乘积的{1,3}-逆、{1,4}-逆和Moore-Penrose 逆的注记

柯圆圆1,李怡铮2   

  1. 1. 江汉大学 数学与计算机科学学院,湖北 武汉 430056;2. 贵州财经大学 数统学院,贵州 贵阳 550025
  • 发布日期:2019-10-08
  • 作者简介:柯圆圆(1986—),女,博士,研究方向:代数学、广义逆理论。
  • 基金资助:
    国家自然科学基金资助项目(11901245);贵州省教育厅青年科技人才成长项目(黔教合KY字[2018]155)

Some Notes on {1,3}-Inverses,{1,4}-Invereses and Moore-Penrose Inverse of Matrix Products in Rings

KE Yuanyuan1,LI Yizheng2   

  1. 1. School of Mathematics and Computer Science,Jianghan University,Wuhan 430056,Hubei,China;2. School of Mathematics and Statistics,Guizhou University of Finance and Economics,Guiyang 550025,Guizhou,China
  • Published:2019-10-08

摘要: 2015年,N. Castro-Gonzalez 等给出了环上矩阵P是可逆时矩阵乘积PA是{1,3}-可逆的,AQ是{1,4}-可逆的和PAQ是MP-逆的充要条件及表达式,本文给出了环上矩阵A满足P′PA =A =AQQ′时,矩阵乘积PA是{1,3}-可逆的,AQ是{1,4}-可逆的,PAQ是MP-逆的充要条件及一些注记。

关键词: 广义逆, {1,3}-逆, {1,4}-逆, Moore-Penrose 逆

Abstract: In 2015,N. Castro-Gonzalez gave the necessary and sufficient conditions for the existence of a {1,3}-inverese of PA,{1,4}-inverse of AQ,and the Moore-Penrose inverse of a matrix product PAQ in rings when P is invertible,in this paper,the necessary and sufficient conditions for the existence of a {1,3}-inverese of PA,{1,4}-inverse of AQ,and the Moore-Penrose inverse of a matrix product PAQ in rings are characterized under the condition P′PA =A =AQQ′ .

Key words: generalized inverses, {1,3}-inverses, {1,4}-inverses, Moore-Penrose inverse

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