三、m阶行列式的定义 分析 13 D 21 22 23 a +aa 1122033 13021032 a12 230131 T=0 T=2 T=2 31 32 13022031 11023032 12021033 T=3 T=1 ∑ 1/2J3)C1CL2:C 21233三、n阶行列式的定义 分析： 31 32 33 21 22 23 11 12 13 a a a a a a a a a D = = a11a22a33 + a13a21a32 + a12a23a31 − a13a22a31 − a11a23a32 − a12a21a33  =0  =2  =2  =3  =1  =1 = ( ) 1 2 3 ( 1)  j j j − 1 1 2 2 3 3 j j j  a a a