Posted by haifeng on 2014-02-13 09:05:47 last update 2014-02-13 09:05:47 | Answers (1) | 收藏
设 $A$ 是 $n$ 阶实方阵, 证明 $r(A^n)=r(A^{n+1})=r(A^{n+2})$.