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Homework Statement
If A=<x> is a cyclic group of order 9 and B=<y> is a cyclic group of order 7. Deduce that Aut(A) is isomorphic to Aut(B)
Homework Equations
The Attempt at a Solution
I already proved that Aut(A) and Aut(B) are cyclic but I don't understand how they can be isomorphic if they don't have the same order. Also the groups are don't have the same amount of generators since both groups are cyclic so every element of both Aut(A) and Aut(B) are generators.