1. I know I have mentioned this before, but I still struggle with cosets a little. How are you supposed to find the distinct cosets, especially whey you are working with a group such as D4? I get confused with the notation we did in class versus the notation in the book and what order you are supposed to do r^3d or dr^3.
2. I liked this section because it really did not seem like it was presenting any new information - it is based off the sections previous, the only thing different is that the groups are now normal. It is interesting to see the relationship between abelian and normal.
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