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Math and science::Algebra::Aluffi

Isomorphisms of cyclic group products

Isomorphisms to a product of cyclic groups

If n and m are positive integers with [what condition?],
then CnmCnCm.

Proof on back side.

The proposition refers to cyclic groups, defined below:

Cyclic group

A group is cyclic iff [what?] or [what?].