LEFT AND RIGHT GENERALIZED DRAZIN INVERSES FOR CLOSED OPERATORS AND APPLICATION TO SINGULAR LINEAR EQUATIONS

被引:0
作者
Messirdi, Sanaa [1 ]
Messirdi, Sofiane [2 ,3 ]
Ayad-Djemai, Setti [2 ,3 ]
Messirdi, Bekkai [3 ,4 ]
机构
[1] High Ind Inst Social Promot ISIPS, Hainut, Belgium
[2] Ahmed Ben Bella Univ Oran1, Fac Exact & Appl Sci, Dept Math, Oran, Algeria
[3] Lab Fundamental & Applicable Math Oran LMFAO, Oran, Algeria
[4] High Sch Elect & Energet Engn, Oran, Algeria
关键词
left generalized Drazin inverse; right genaralized Drazin inverse; closed linear operator; GKD and SVEP; quasinilpotent perturbation; singular linear equation;
D O I
10.1216/rmj.2021.51.225
中图分类号
O1 [数学];
学科分类号
0701 ; 070101 ;
摘要
We define and study left and right generalized Drazin inverses for a closed densely defined linear operator in a Hilbert space. These operators are characterized by means of the generalized Kato decomposition and the single-valued extension property. We prove that they are invariant under commuting quasinilpotent perturbations. Finally, we give an application to solve singular linear equations.
引用
收藏
页码:225 / 241
页数:17
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