fact: Definition LocSqr2Mor2Is {SOM : SubsetsOfMors} {y z w : ob C} {s : y --> w} {e1 : SOM y w s} {f : z --> w} (LS2 : LocSqr2 SOM s e1 f) : SOM LS2 z (LocSqr2Mor2 LS2) := dirprod_pr1 (pr2 LS2).
imports: UniMath.Foundations.PartD UniMath.Foundations.Propositions UniMath.Foundations.Sets UniMath.CategoryTheory.Core.Categories UniMath.CategoryTheory.Core.Isos UniMath.CategoryTheory.Core.Functors