(O : Subuniverse) (T : Type) `{In O T} : PreReflects O T. Proof. unshelve econstructor. - exact T. - assumption. - exact idmap. Defined.
Require Import HoTT.Basics HoTT.Types. Require Import Equiv.BiInv Extensions HProp HFiber NullHomotopy Limits.Pullback. Require Import Homotopy.IdentitySystems. Require Import Colimits.Pushout.