Definition internal_istrans_mor_tar {C : category} {PB : Pullbacks C} {x : C} {R : internal_relation x} (t : internal_istrans_mor PB R) : t · internal_relation_tar R = composable_pairs_rel_tar PB R · internal_relation_tar R := pr22 t.
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.