∀ {M : Type u_1} [inst : AddCommMonoid M] {S : AddSubmonoid M} {N : Type u_2} [inst_1 : AddCommMonoid N] {P : Type u_3}
  [inst_2 : AddCommMonoid P] (f : S.LocalizationMap N) {g : M →+ P} (hg : ∀ (y : ↥S), IsAddUnit (g ↑y)) (x : M),
  (f.lift hg) (f x) = g x