∀ {𝕜 : Type u_1} {E : Type u_2} {F : Type u_3} [inst : Ring 𝕜] [inst_1 : AddCommGroup E] [inst_2 : Module 𝕜 E]
  [inst_3 : TopologicalSpace E] [inst_4 : IsTopologicalAddGroup E] [inst_5 : ContinuousConstSMul 𝕜 E]
  [inst_6 : AddCommGroup F] [inst_7 : Module 𝕜 F] [inst_8 : TopologicalSpace F] [inst_9 : IsTopologicalAddGroup F]
  [inst_10 : ContinuousConstSMul 𝕜 F] (a : FormalMultilinearSeries 𝕜 E F), -a + a = 0