∀ {𝕜 : Type u_1} {α : Type u_2} [inst : Field 𝕜] [inst_1 : LinearOrder 𝕜] [IsStrictOrderedRing 𝕜]
  [inst_3 : TopologicalSpace 𝕜] [OrderTopology 𝕜] {l : Filter α} {f : 𝕜 → α},
  Filter.Tendsto (fun x => f x⁻¹) Filter.atBot l → Filter.Tendsto f (nhdsWithin 0 (Set.Iio 0)) l