`{Univalence} : Type <~> { B : Type_ O1 & { C : Type_ O2 & C -> O2 B }} := Build_Equiv _ _ fracture_unglue isequiv_fracture_unglue.
Require Import HoTT.Basics HoTT.Types. Require Import Extensions Limits.Pullback. Require Import Modality Lex Open Closed Nullification.