1. Well I guess that the most difficult part of this section for me was the definition of ideal. I know that this is what the entire section is on, and I think I understand what it means, but I'm not positive. Is it basically saying that it is a commutative subring of R except that the different elements, a,r, are from the 2 different rings I and R? I'm just a little hazy on it, but I think I will understand it if I go through it a few more times.
2. I really liked this section even though I didn't quite understand the first definition, because it is basically stuff that we've already gone over except with different rings. So hopefully after I understand exactly what an ideal is, it will all click even more!
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