关于用加边矩阵方法求广义逆的注记

The Note on Applications of the Method of Bordered Matrix for Finding Generalized Inverse

本文证明了求A的广义逆A〔1.t4〕和A〔1,2,t4〕的加边条件是一样的。我们指出〔1〕〔2〕的加边条件仅仅是充分的,尽管〔3〕的关于求A〔1,2,3〕的矩阵行的结果是错的,但其加边条件对[1]和[2]而言是不能减弱的了。

In this paper,we proved that borderd condition for finding generalized inverse matrices A[1,t4] and A[1,2,t4]of A is same. We point out the borderd condition of [l] and [2] only is sufficient,and the bordered condition of the result of ro\v of matrix for finding A[1,2,3] in [3] can not be weakened for [1] and [2], though above result of [3] is wrong.