fact: Definition pb_1cell (p q : pb_cone) : UU := ∑ (φ : p --> q) (τ : invertible_2cell (φ · pb_cone_pr1 q) (pb_cone_pr1 p)) (θ : invertible_2cell (φ · pb_cone_pr2 q) (pb_cone_pr2 p)), φ ◃ pb_cone_cell q = lassociator _ _ _ • (τ ▹ f) • pb_cone_cell p • (θ^-1 ▹ g) • rassociator _ _ _.
imports: UniMath.Foundations.All UniMath.MoreFoundations.All UniMath.CategoryTheory.Core.Categories UniMath.Bicategories.Core.Bicat UniMath.Bicategories.Core.Invertible_2cells UniMath.Bicategories.Core.Univalence