I'm taking rings and fields this semester but don't remember group theory. Is it necessary to review everything? I took group theory a year and a half ago so I don't remember anything. I'm taking rings and fields this semester and I'm worried I won't be prepared (group theory was already a struggle back then). We're covering chapters 12-22 in Gallian's Contemporary Abstract Algebra (7th or 8th edition, they're the same units).
Should I be reviewing everything or can I go on without?
Thank you.

I'm posting this around 2 years after I took Rings & Fields. Just in case anyone might find my input helpful, I'll post it.
I actually did quite well and didn't find it too difficult without reviewing my group theory. In fact, I think it was easier than group theory (or maybe it's just that I just matured a bit more in various ways). In a way as well, rings and fields is kind of its own thing; an extension of group theory, but I found it self-contained (at least by Gallian) so one could more or less learn it on its own without involving group theory.
From my personal experience, I didn't find a review of group theory to be necessary, but that's my personal experience.
