A B为两个矩阵,AB = BA,并且 A的平方 = 0,证明B = 0,
问题描述:
A B为两个矩阵,AB = BA,并且 A的平方 = 0,证明B = 0,
答
这个题目不对
举个反例:A是零矩阵,则对任意矩阵B,AB=BA=0,且A的平方=0
此时,B为任意矩阵,不一定为零矩阵对呀,我也是这样想的,原题是英文,Suppose two matrices A and B commute, AB = BA and that A^2 = 0, show that B = 0.那如果假设A不能为零的话,可以证明吗?谢谢客气