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G is the group of matrices of the form:

1 n

0 1

Where n is an element of Z, and G is a group under matrix multiplication.

I must show that G is isomorphic to the group of integers Z. I do not know how to do this, since all examples we covered gave us the specific mapping from one group to the other.

Any help would be appreciated.

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# Isomorphism without being told mapping

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