Hi, Can someone please tell me a method for describing Aut(Cn) as a product of cyclic groups e.g describe Aut(C30) as a product of cyclic groups. Thanks.
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Originally Posted by jedoob Hi, Can someone please tell me a method for describing Aut(Cn) as a product of cyclic groups e.g describe Aut(C30) as a product of cyclic groups. Thanks. I never studied the automorphism group. However, it seems to me that... Aut(Z_n) Has phi(n) elements and it is cyclic. Hence, Aut(Z_n) is isomorphic to Z_{phi(n)}. I am assuming C_n means a cyclic group, right?
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