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I'm wondering if anyone can help me with learning how to write groups as an external direct product of cyclic groups.
The example I'm looking at is for the subset {1, -1, i, -i} of complex numbers which is a group under complex multiplication. How do I express it as an external direct product of cyclic groups?
The example I'm looking at is for the subset {1, -1, i, -i} of complex numbers which is a group under complex multiplication. How do I express it as an external direct product of cyclic groups?