I came accross a section of my notes that claimed the automorphism group of the cyclec groups C_2p where p=5,7,11 is cyclic,(adsbygoogle = window.adsbygoogle || []).push({});

that is Aut(C_2p) is cyclic for p = 5,7,11.

I wasn't able to see why this is so.

Is it just a fact or is there some sort of proof of the above...?

Thanks

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Cyclic Automorphism Group

**Physics Forums | Science Articles, Homework Help, Discussion**