∀ {𝕜 : Type u_2} {E : Type u_4} [inst : CommSemiring 𝕜] [inst_1 : TopologicalSpace 𝕜] [inst_2 : ContinuousAdd 𝕜]
  [inst_3 : ContinuousConstSMul 𝕜 𝕜] [inst_4 : AddCommMonoid E] [inst_5 : Module 𝕜 E] [inst_6 : TopologicalSpace E]
  (V : Set E), IsOpen (⇑(toWeakSpaceCLM 𝕜 E) '' V) → IsOpen V