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2026-02-07 13:42:12 UTC

Amélia Liao 🍊😈 on Nostr: trying to make your type theory 'more convenient' by shoving things into the ...

trying to make your type theory 'more convenient' by shoving things into the definitional equality reminds me: a while ago there was a proposal to extend cubical agda with a hierarchy of universes of strict n-types, like arend.

this is a fantastic idea. if you hate yourself. just like strict prop results in something that looks a lot like the ((-1)-connected, (-1)-truncated) factorisation system (a.k.a. (epi, mono)) but mathematically stunted by the necessary inability to prove that a family is strictly (-1)-truncated, an infinite hierarchy of universes of strict n-types results in your type theory being littered with Utter Dogshit versions of the (n-connected, n-truncated) factorisation systems for every n! truly, an incredible development