Honestly I think I'd have an easier time understanding 1000s of lines of slop than 93 lines of proofs lol.
Does anyone have any recommended learning resources for this type of thing? Skimming the repo, it looks like a lot of unicode and math terminology, but this project seems really compelling to me.
I learned working with the Isabelle proof assistant in a university course. There were weekly exercises and a group project at the end. (Actually proving things by hand, no LLM.) That really helped. Before that course it was also hard for me to get into this.
Other than that you can also read introductory material for set theory. There the meaning of all of the unicode symbols you can see in the spec should be explained.