∀ {α : Type u_1} {F : Type u_4} {E' : Type u_6} [inst : Norm F] [inst_1 : SeminormedAddCommGroup E'] {c : ℝ} {g : α → F}
  {l : Filter α} {f₁ f₂ : α → E'},
  Asymptotics.IsBigOWith c l (fun x => f₁ x - f₂ x) g → Asymptotics.IsBigOWith c l (fun x => f₂ x - f₁ x) g