Section 7.3-7.4 Due May 28

1. I'm having a hard time understanding cyclics. And I can't figure out what an automorphism would be with groups like S_3 and D_4. It started getting hazy when it was talking about the image and e_G and e_H, so if we could go over that a lot in class that'd be great.
2. It's interesting that every single infinite cyclic group or order n is isomorphic to Z_n. It was interesting how similar the properties of proofs for subgroups were to subrings.