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第一步算错了In Reply To:请教 Posted by:pladene at 2003-11-20 18:17:16 > 这题我用的Burnside定理,当n是偶数的时候算出来不对。以n = 4为例。 > 有(1)四个旋转置换,(2)两个对角线置换和(3)两个对边中点连线的对称置换 > |G| = 8; > (1) 81 + 3 + 3 + 3 = 90; ~~~~~~~~~~~~~~~~~~~~~~~~~~~ 这里应该是81+3+3+9 > (2) 2*3*3*3 = 54; > (3) 2*3*3 = 18; > (1)+(2)+(3) > 90 + 54 + 18 = 162.为什么不是8的倍数啊? Followed by:
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