7.4, due March 14

I'm really glad the definition for isomorphism concerning groups really didn't change. And, theorem 7.18 is so cool! Even after reading the proof, I don't COMPLETELY understand why it's true but that makes it that much cooler of a theorem. I think a lot of the theorems in this section will be really useful and they're interesting because I didn't expect them to hold. What's confusing for me so far is permutations vs representations and the advantages of each.