fact: Axiom Ran_parametricity : forall a b c `{Functor f} `{Functor g} (k : Ran f g a) (g : b -> c) (h : a -> f b), fmap g (k _ h) = k _ (fmap g \o h).
imports: Hask.Ltac Hask.Data.Functor Hask.Data.Functor.Contravariant