fact: Definition make_comma_cone (p : B) (π₁ : p --> b₁) (π₂ : p --> b₂) (η : π₁ · f ==> π₂ · g) : comma_cone := (p ,, π₁ ,, π₂ ,, η).
imports: UniMath.Foundations.All UniMath.MoreFoundations.All UniMath.CategoryTheory.Core.Categories UniMath.Bicategories.Core.Bicat UniMath.Bicategories.Core.Invertible_2cells UniMath.Bicategories.Core.Univalence