proposition: Lemma composition_of_helper_helper (x : Functor C'' D) : G' o G o x o (F' o F) = G' o (G o x o F') o F.
proof: Proof. path_functor. Defined.
imports: Category.Core Functor.Core Functor.Pointwise.Core NaturalTransformation.Core NaturalTransformation.Paths Functor.Composition.Core Functor.Identity Functor.Paths PathGroupoids Types.Forall HoTT.Tactics Basics.Tactics