本文研究了修正矩阵Drazin逆的表示形式.利用k次幂等矩阵和可对角化矩阵的性质,减弱了文献[4]中的条件,获得了新的Drazin逆的表示形式.
In this paper, we study the representations of the Drazin inverse of a modified matrix A - CB. By the properties of the k-idempotent matrix and the diagonalizable matrix, we get some new representations of the Drazin inverse through weakened conditions of literature [4].