fact: Definition isPullback {a b c d : C} (f : b --> a) (g : c --> a) (p1 : d --> b) (p2 : d --> c) (H : p1 · f = p2 · g) : UU := ∏ e (h : e --> b) (k : e --> c) (H : h · f = k · g ), ∃! hk : e --> d, (hk · p1 = h) × (hk · p2 = k).
imports: UniMath.Foundations.All UniMath.MoreFoundations.All UniMath.CategoryTheory.Core.Categories UniMath.CategoryTheory.Core.Isos UniMath.CategoryTheory.Core.NaturalTransformations UniMath.CategoryTheory.Core.TransportMorphisms UniMath.CategoryTheory.Core.Univalence UniMath.CategoryTheory.Core.Functors UniMath.CategoryTheory.Limits.Terminal UniMath.CategoryTheory.Limits.BinProducts UniMath.CategoryTheory.Limits.Equalizers UniMath.CategoryTheory.FunctorCategory UniMath.CategoryTheory.Monics