证明 设
a11 a12 a21 a22 A= L L a m1 am2 b11 b21 B= L b s1 c11 c21 C = L c m12002/3
T L a1s a1 T L a2s a2 = (α1 ,α2 ,L,α s ) = M , L L
aT L ams m
T L b1n b1 T b22 L b2n b2 = (β1 , β 2 ,L, β n ) = M , L L L bT as 2 L bsn s
b12
c12 c22 L cm2
T L c1n c1 T L c2n c = (γ 1 , γ 2 ,L, γ n ) = 2 , L L M cT L cmn m
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