Cycles[{cyc1, cyc2, ...}] 用不相交轮换 表示一个置换.
含有两个轮换的一个置换:
自动计算为标准型:
PermutationCyclesQ PermutationCycles PermutationList PermutationGroup PermutationProduct Permutations FindPermutation Permute PermutationReplace
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