Describing nonisomorphic central extensions


Assignment:

Describe all nonisomorphic central extensions of Z_n by Z_2 x Z_2 meaning central group extensions of the following form

1 --> Z_n --> G --> Z_2 x Z_2 --> 1

Meaning, determine those nonisomorphic groups G that can be described by such an extension.

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Algebra: Describing nonisomorphic central extensions
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