No, no. is not . Its the cyclic group of order . This notation is used by Humphreys.]]>

is the integers modulo n. Jane, why the notation with C? I typically see this in applications to physics and chemistry, but normally the group theoretic:

Or the number theoretic:

notations are used by mathematicians. Just curious where you got it from.

]]>The result you need is the fundamental theorem of finite Abelian groups.

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