This post is way off topic, and a bit in the weeds, and maybe even a bit silly, which is why I’m throwing it here rather than getting back to making my proper blog work. I really will do that, but… ok, not today. I’ve been trying to learn some abstract algebra. I never studied it in school, and sometimes I bump into people describing operations in “group-speak” (throwing around words like “abelian” and “symmetric group”), and I’d like to try to keep up with what they’re ...