fact: Definition yoneda_natural_transformation : morphism (_ -> _) 1 (yoneda_functor A) := @morphism_inverse _ _ _ _ (coyoneda_lemma A^op).
imports: Category.Core Functor.Core NaturalTransformation.Core Category.Dual Functor.Dual Functor.Composition.Core Category.Morphisms FunctorCategory.Morphisms SetCategory Functor.Attributes Functor.Composition.Functorial Functor.Identity HomFunctor FunctorCategory.Core NaturalTransformation.Paths HoTT.Tactics