exact DVect2.Eq.nil_rfl
α : Type u
inst✝¹ : Category α
β : Type v
inst✝ : Category β
F : α ⥤ β
as₁ as₂ : List (List α)
⊢ DVect2.Eq
    (Prefunctor.map (Prefunctor.obj mapF.toPrefunctor (Prefunctor.obj mapF.toPrefunctor F) ⋙ joinF).toPrefunctor
      DVect2.nil)
    (Prefunctor.map (joinF ⋙ Prefunctor.obj mapF.toPrefunctor F).toPrefunctor DVect2.nil)
no goals