fact: Definition is_lifting {C D: category} {F: functor C C} {G: functor D D} (H: functor C D) (HH: functor (FunctorAlg F) (FunctorAlg G)): UU.
imports: UniMath.Foundations.Sets UniMath.CategoryTheory.Core.Categories UniMath.CategoryTheory.Core.Functors UniMath.CategoryTheory.Core.NaturalTransformations UniMath.CategoryTheory.whiskering UniMath.CategoryTheory.FunctorAlgebras UniMath.CategoryTheory.UnitorsAndAssociatorsForEndofunctors UniMath.CategoryTheory.Limits.Initial UniMath.CategoryTheory.Adjunctions.Core