∀ {α : Type u_2} {β : Type u_3} {γ : Type u_4} {δ : Type u_5} [inst : TopologicalSpace α] [inst_1 : TopologicalSpace β]
  [inst_2 : TopologicalSpace γ] [inst_3 : TopologicalSpace δ] (f : γ →CO δ) (g : β →CO γ) (h : α →CO β),
  (f.comp g).comp h = f.comp (g.comp h)