6.1 (through pg 138), due February 22

Things are really starting to feel abstract for me now. I like the new notation and way to think about congruence classes by defining a subring. After working with them for so long, this way seems intuitive, concise, and accurate. I did get a little confused toward the end of the reading where it talked about the ideal generate by c1, c2,... because r and c were both coming from R and I didn't see the point of that ideal.