摘要: 考慮兩個(gè)矩陣之和的Drazin逆的表示. 對(duì)于n階矩陣P,Q, 利用Cline公式及Drazin逆的性質(zhì)給出在P2QP2=0, P3QP=0, PQ3=0, PQ2P=0, P2QPQ=0等條件下兩矩陣和P+Q[KG*8]的Drazin逆的表達(dá)式.
關(guān)鍵詞: 廣義逆; Drazin逆; 指標(biāo)
中圖分類號(hào): O151.21 文獻(xiàn)標(biāo)志碼: A 文章編號(hào): 1671-5489(2023)04-0739-06
Representations of Drazin Inverse of" Sum for Two Matrices
GUO Li, WANG Anqi, HOU Yu, LUAN Tian
(School of Mathematics and Statistics, Beihua University, Jilin 132013, Jilin Province, China)
Abstract: We considered the representation of the Drazin inverses of the sum for two matrices. For n-th order matrices [WTHX]P[WT] and [WTHX]Q[WT],
the expression" of the Drazin inverse of the sum for two matrices [WTHX]P[WT]+[WTHX]Q[WT] was given by using the Cline formula and the properties of Drazin inverse under the conditions such as" P2QP2=0, P3QP=0, PQ3=0, PQ2P=0, P2QPQ=0, etc.
Keywords: generalized inverse; Drazin inverse; index
參考文獻(xiàn)
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(責(zé)任編輯: 趙立芹)
收稿日期: 2022-12-05.
第一作者簡(jiǎn)介: 郭 麗(1980—), 女, 漢族, 博士, 教授, 從事廣義逆理論及其應(yīng)用的研究, E-mail: guomingli95@163.com.
通信作者簡(jiǎn)介: 欒 天(1980—), 女, 漢族, 博士, 教授, 從事廣義逆計(jì)算的研究, E-mail: luantian@163.com.
基金項(xiàng)目: 吉林省科技發(fā)展計(jì)劃項(xiàng)目(批準(zhǔn)號(hào): YDZJ202201ZYTS648; YDZJ202201ZYTS320)、 吉林省教育廳科學(xué)技術(shù)研究規(guī)劃項(xiàng)目"(批準(zhǔn)號(hào): JJKH20210028KJ; 2014213)和北華大學(xué)研究生創(chuàng)新項(xiàng)目(批準(zhǔn)號(hào): 2022[031]; 2022[002]).