{A : Type u_7} →
  {B : Type u_8} →
    {inst : AddMonoid A} →
      {inst_1 : AddMonoid B} →
        {inst_2 : TopologicalSpace A} → {inst_3 : TopologicalSpace B} → [SizeOf A] → [SizeOf B] → (A →ₜ+ B) → ℕ