∀ (𝕜 : Type u_5) {ι : Type u_3} (E : ι → Type u_2) (G : Type u_4) (G' : Type u_1) [inst : NontriviallyNormedField 𝕜]
  [inst_1 : (i : ι) → SeminormedAddCommGroup (E i)] [inst_2 : (i : ι) → NormedSpace 𝕜 (E i)]
  [inst_3 : SeminormedAddCommGroup G] [inst_4 : NormedSpace 𝕜 G] [inst_5 : SeminormedAddCommGroup G']
  [inst_6 : NormedSpace 𝕜 G'],
  Function.LeftInverse ContinuousMultilinearMap.prodEquiv.invFun ContinuousMultilinearMap.prodEquiv.toFun