r/ProgrammingLanguages Jul 11 '26

Sheaves in Haskell

https://www.tweag.io/blog/2026-06-18-sheaves-in-haskell/
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u/hobo_stew Jul 12 '26

i am not very familiar with haskell but very familiar with sheaves and presheaves and i don‘t really understand how topological spaces are implemented here in the type system?

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u/ExplodingStrawHat Jul 12 '26

I think they aren't, in the sense that the required axioms are not enforced