Definition make_internal_relation_to_arr_relation {C : category} {x : C} (R : internal_relation x) {w : C} (f g : w --> x) (h : w --> R) (p : h · internal_relation_src R = f) (q : h · internal_relation_tar R = g) : internal_relation_to_arr_relation R f g := h ,, p ,, q.
Require Import UniMath.Foundations.All. Require Import UniMath.MoreFoundations.All. Require Import UniMath.CategoryTheory.Core.Prelude. Require Import UniMath.CategoryTheory.Limits.Pullbacks. Require Import UniMath.CategoryTheory.Limits.Coequalizers. Require Import UniMath.CategoryTheory.RegularAndExact.RegularCategory.