Definition make_internal_istrans_mor {C : category} {PB : Pullbacks C} {x : C} (R : internal_relation x) (t : composable_pairs_rel PB R --> R) (p : t · internal_relation_src R = composable_pairs_rel_src PB R · internal_relation_src R) (q : t · internal_relation_tar R = composable_pairs_rel_tar PB R · internal_relation_tar R) : internal_istrans_mor PB R := t ,, 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.