fact: Definition mor_to_pb_obj_pr1 {a b₁ b₂ b₃ : B} {f : b₁ --> b₃} {g : b₂ --> b₃} (h₁ : a --> b₁) (h₂ : a --> b₂) (γ : invertible_2cell (h₁ · f) (h₂ · g)) : invertible_2cell (h₁ ⊗[ γ ] h₂ · π₁) h₁.
imports: UniMath.Foundations.All UniMath.MoreFoundations.All UniMath.CategoryTheory.Core.Categories UniMath.Bicategories.Core.Bicat UniMath.Bicategories.Core.Unitors UniMath.Bicategories.Core.BicategoryLaws UniMath.Bicategories.Core.Invertible_2cells UniMath.Bicategories.Limits.Pullbacks