∀ {α : Type u_2} {G₀ : Type u_4} [inst : TopologicalSpace α] [inst_1 : GroupWithZero G₀] [inst_2 : MulAction G₀ α]
  [ContinuousConstSMul G₀ α] {c : G₀}, c ≠ 0 → ∀ (s : Set α), closure (c • s) = c • closure s