∀ {𝕜 : Type u_1} {E : Type u_2} [inst : Field 𝕜] [inst_1 : Ring E] [inst_2 : Algebra 𝕜 E] [inst_3 : TopologicalSpace E]
  [inst_4 : IsTopologicalRing E] (c : ℕ → 𝕜) [Subsingleton E] {x : E}, FormalMultilinearSeries.ofScalarsSum c x = 0