fact: Definition is_right_lifting {h : z --> y} (τ : h · g ==> f) : UU := ∏ (k : z --> y), isweq (λ (θ : k ==> h), (θ ▹ g) • τ).
imports: UniMath.Foundations.All UniMath.MoreFoundations.All UniMath.CategoryTheory.Core.Prelude UniMath.Bicategories.Core.Bicat UniMath.Bicategories.Core.Examples.OpMorBicat UniMath.Bicategories.Core.Examples.OpCellBicat