∀ {α : Type u_1} {𝕜 : Type u_3} {E : Type u_4} {F : Type u_5} [inst : NontriviallyNormedField 𝕜]
  [inst_1 : AddCommGroup E] [inst_2 : TopologicalSpace E] [inst_3 : Module 𝕜 E] [inst_4 : AddCommGroup F]
  [inst_5 : TopologicalSpace F] [inst_6 : Module 𝕜 F] [ContinuousAdd E] [ContinuousSMul 𝕜 E] {f₁ f₂ : α → E} {g : α → F}
  {l : Filter α}, f₁ =o[𝕜; l] g → f₂ =o[𝕜; l] g → (fun i => f₁ i + f₂ i) =o[𝕜; l] g