∀ {R : Type u_1} [inst : Monoid R] (S : Submonoid R) [inst_1 : OreLocalization.OreSet S] (X : Type u_2)
  [inst_2 : MulAction R X],
  OreLocalization.oreEqv S X = { r := fun rs rs' => ∃ u v, u • rs'.1 = v • rs.1 ∧ ↑u * ↑rs'.2 = v * ↑rs.2, iseqv := ⋯ }