fact: Definition make_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) : (∏ e (h : C ⟦e, b⟧) (k : C⟦e,c⟧)(Hk : h · f = k · g ), iscontr (total2 (fun hk : C⟦e,d⟧ => dirprod (hk · p1 = h)(hk · p2 = k)))) → isPullback f g 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