fact: Definition help_pb_on_1cell {b₁ b₂ c₂ b₃ : B} (f : b₁ --> b₃) {g₁ : b₂ --> b₃} {g₂ : c₂ --> b₃} {h : b₂ --> c₂} (β : invertible_2cell g₁ (h · g₂)) : invertible_2cell (π₁ · f) (π₂ · h · g₂) := comp_of_invertible_2cell (pb_cell f g₁) (comp_of_invertible_2cell (lwhisker_of_invertible_2cell _ β) (lassociator_invertible_2cell _ _ _)).
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