∀ {𝕜 : Type u_1} [inst : NontriviallyNormedField 𝕜] {E : Type u_2} [inst_1 : NormedAddCommGroup E]
  [inst_2 : NormedSpace 𝕜 E] {s : Set E} {x : E},
  UniqueDiffWithinAt 𝕜 s x →
    ∀ {G : Type u_4} [inst_3 : GroupWithZero G] [inst_4 : DistribMulAction G E] [ContinuousConstSMul G E]
      [SMulCommClass G 𝕜 E] {c : G}, c ≠ 0 → UniqueDiffWithinAt 𝕜 (c • s) (c • x)