摘要
利用矩阵的秩方法,给出了矩阵的加权 Drazin 逆的反序律成立的一个充分必要条件.推广了文献 [8] 中的结论,文献 [9] 中的主要结果(当 n=2 时)也是本结论的特殊情形.
By using the rank methods of matrix, the necessary and su?cient condition is given for reverse order law W(AB)d,WW = (W2Bd,W2W2)(W1Ad,W1W1) to hold for W-weighted Drazin inverses, where W = W2W1. This result is the extension of the main result proposed by [8] and the result (when n=2) proposed by [9].
出处
《黑龙江大学自然科学学报》
CAS
2004年第4期89-94,共6页
Journal of Natural Science of Heilongjiang University
基金
Supported by Science Found of Shanghai Municipal Commission of Eduction Project 03DZ04
