fact: Definition isPullback_Pullback {a b c : C} {f : C⟦b, a⟧}{g : C⟦c, a⟧} (P : Pullback f g) : isPullback f g (PullbackPr1 P) (PullbackPr2 P) (PullbackSqrCommutes P).
imports: UniMath.Foundations.PartD UniMath.Foundations.Propositions UniMath.Foundations.Sets UniMath.MoreFoundations.Tactics UniMath.Combinatorics.StandardFiniteSets UniMath.CategoryTheory.Core.Categories UniMath.CategoryTheory.Core.Isos UniMath.CategoryTheory.Core.Univalence UniMath.CategoryTheory.Limits.Graphs.Limits UniMath.CategoryTheory.Limits.Graphs.Colimits