Definition mor_subobject_classifier {C : category} {T : Terminal C} (Ω Ω' : subobject_classifier T) : Ω --> Ω'. Proof. use characteristic_morphism. - exact T. - exact (true Ω). Defined.
Require Import UniMath.Foundations.All. Require Import UniMath.MoreFoundations.All. Require Import UniMath.CategoryTheory.Core.Prelude. Require Import UniMath.CategoryTheory.Limits.Terminal. Require Import UniMath.CategoryTheory.Limits.Pullbacks. Require Import UniMath.CategoryTheory.Monics. Require Import UniMath.CategoryTheory.SubobjectClassifier.SubobjectClassifier.