任意12阶循环群同构于Z(12)
设元素为{1,a,a^2,...a^11}
其子群如下
{1}
{1,a^6}
{1,a^4,a^8}
{1,a^3,a^6,a^9}
{1,a^2,a^4,a^6,a^8,a^10}
{1,a,a^2,...a^11}
共6个