Characterizations and perturbation analysis of a class of matrices related to core-EP inverses
Characterizations and perturbation analysis of a class of matrices related to core-EP inverses
复制标题
一类与 core-EP 逆有关的矩阵的表征和微扰分析
DOI:
10.1016/j.cam.2021.113496
复制
发表时间:
2021-09
影响因子:
2.4
通讯作者:
Thome Nestor
中科院分区:
文献类型:
--
作者:
Zhou Mengmeng;Chen Jianlong;Thome Nestor
Abstract Let A, B∈ ℂ n× n with ind (A)= k and ind (B)= s and let L B= B 2 B†○. A new condition (C s,∗): R (A k)∩ N ((B s)∗)={0} and R (B s)∩ N ((A k)∗)={0}, is defined. Some new characterizations related to core-EP inverses are obtained when B satisfies condition (C s,∗). Explicit expressions of B†○ and B B†○ are also given. In addition, equivalent conditions, which guarantee that B satisfies condition (C s,∗), are investigated. We proved that B satisfies condition (C s,∗) if and only if L B has a fixed matrix form. As an application, upper bounds for the errors∥ B†○− A†○∥∕∥ A†○∥ and∥ B B†○− A A†○∥ are studied.
登录
查看更多内容
DOI:
10.1007/s40840-015-0143-z
发表时间:
2017-10
影响因子:
1.2
作者:
D. Mosić
通讯作者:
D. Mosić
DOI:
10.1016/j.amc.2018.04.059
发表时间:
2018-11
期刊:
Appl. Math. Comput.
影响因子:
--
作者:
Haifeng Ma
通讯作者:
Haifeng Ma
影响因子:
2.6
作者:
D. Mosić;P. Stanimirović;V. Katsikis
通讯作者:
D. Mosić;P. Stanimirović;V. Katsikis
DOI:
10.4208/cmr.2020-0028
发表时间:
2021-06
期刊:
--
影响因子:
--
作者:
Jun Wei
通讯作者:
Jun Wei
影响因子:
1
作者:
D. Mosić
通讯作者:
D. Mosić