fact: Definition equiv_O_functor_hfiber {A B} (f : A -> B) (b : B) : O (hfiber f b) <~> hfiber (O_functor O f) (to O B b) := Build_Equiv _ _ (O_functor_hfiber O f b) _.
imports: HoTT.Basics HoTT.Types HFiber Limits.Pullback Factorization Truncations.Core Modality Accessible Localization Descent Separated