fact: Definition isPullback {a b c d : C} (f : C ⟦b, a⟧) (g : C ⟦c, a⟧) (p1 : C⟦d,b⟧) (p2 : C⟦d,c⟧) (H : p1 · f = p2· g) : UU := isLimCone (pullback_diagram f g) d (PullbCone f g d p1 p2 H).
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