cd
ps
ll
whoami
article
academic
G1T1
linear_algebra
1-det
1-prop
elimination_invariance.md
elimination_invariance.md
消法变换不改变行列式,即若$B=P(i,j[k])A$或$B=AP(i,j[k])$,则$|B|=|A|$
因为消法变换拿去消原来矩阵的矩阵本身行列式就为$0$,所以改变不了原来矩阵行列式的值