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Vanilla 1.1.10 is a product of Lussumo. More Information: Documentation, Community Support.
I added some more details to the section on ultrafilter monad at ultrafilter. Incidentally, it seems to me that the bit on Barr’s observation (“topological spaces = relational $\beta$-modules”) is too terse. There is a lot of generalized topology via abstract nonsense that deserves more explanation.
I also added some elementary material to cartesian closed category, mainly to indicate to the novice how exponentials deserve to be thought of as function spaces, how internal composition works, and so forth. I left the job somewhat unfinished.
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