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John Baez (Jun 27 2021 at 20:01):I advertised this nice book, which has a lot of category theory in it:
https://twitter.com/johncarlosbaez/status/1409213172494475264
I got my copy of this book! It explains a lot of modern math connected to new concepts of space: diffeologies, synthetic differential geometry, topos theory, infinity-groupoids, homotopy type theory, stacks, derived geometry and differential graded categories. (1/n) https://twitter.com/johncarlosbaez/status/1409213172494475264/photo/1
- John Carlos Baez (@johncarlosbaez)