Definition from_Equalizer_to_Equalizer {y z : C} {f g : y --> z} (E E': Equalizer f g) : C⟦E, E'⟧. Proof. apply (EqualizerIn E' E (EqualizerArrow E)). apply EqualizerEqAr. Defined.
Require Import UniMath.Foundations.All. Require Import UniMath.MoreFoundations.All. Require Import UniMath.CategoryTheory.Core.Categories. Require Import UniMath.CategoryTheory.Core.Isos. Require Import UniMath.CategoryTheory.Core.Univalence. Require Import UniMath.CategoryTheory.Monics. Require Import UniMath.CategoryTheory.Retracts.