∀ {k : Type u_1} [inst : Field k] {K : Type u_2} [inst_1 : Field K] {F : Type u_3} [inst_2 : Field F]
  [inst_3 : Algebra k K] [inst_4 : Algebra k F] {w : NumberField.InfinitePlace F},
  NumberField.InfinitePlace.IsUnramified k w → ∀ (f : K →ₐ[k] F), NumberField.InfinitePlace.IsUnramified k (w.comap ↑f)