Difficult: This was a hard section! I think I kind of understand most of it, but I feel pretty shaky on what exactly a the group G(p) is and what a p-group is. I also don't really understand the proof of Lemma 8.6. Also, I wish I knew why they kept switching between additive notation and multiplicative notation.
Reflective: I think this section is really interesting because it determines how we can classify all abelian groups. I also think it's interesting that most abelian groups are additive.
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