∀ {R : Type v} [inst : CommRing R] {A : Type u} [inst_1 : CommRing A] [inst_2 : Algebra R A] {B : Type w}
  [inst_3 : CommRing B] [inst_4 : Algebra R B] (I : Ideal B) [Algebra.FormallyUnramified R A],
  I ^ 2 = ⊥ → Function.Injective (Ideal.Quotient.mkₐ R I).comp