The minus order and range additivity

被引:13
作者
Djikic, Marko S. [1 ]
Fongi, Guillermina [2 ]
Maestripieri, Alejandra [2 ,3 ]
机构
[1] Univ Nis, Fac Sci & Math, Dept Math, Visegradska 83, Nish 18000, Serbia
[2] Inst Argentino Matemat Alberto P Calderon, Saavedra 15,Piso 3, RA-1083 Buenos Aires, DF, Argentina
[3] Univ Buenos Aires, Fac Ingn, Dept Matemat, Buenos Aires, DF, Argentina
关键词
Minus order; Range additivity; Generalized inverses; Least squares problems; CORE INVERSE; STAR; OPERATOR; OBLIQUE;
D O I
10.1016/j.laa.2017.05.045
中图分类号
O29 [应用数学];
学科分类号
070104 ;
摘要
We study the minus order on the algebra of bounded linear operators on a Hilbert space. By giving a characterization in terms of range additivity, we show that the intrinsic nature of the minus order is algebraic. Applications to generalized inverses of the sum of two operators, to systems of operator equations and to optimization problems are also presented. (c) 2017 Elsevier Inc. All rights reserved.
引用
收藏
页码:234 / 256
页数:23
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