∀ {C : Type u₁} {D : Type u₂} [inst : CategoryTheory.Category.{v₁, u₁} C] [inst_1 : CategoryTheory.Category.{v₂, u₂} D]
  {i : CategoryTheory.Functor D C} [inst_2 : CategoryTheory.Reflective i] (A : C) (B : D),
  CategoryTheory.unitCompPartialBijectiveAux A B =
    ((CategoryTheory.reflectorAdjunction i).homEquiv A B).symm.trans
      (CategoryTheory.Functor.FullyFaithful.ofFullyFaithful i).homEquiv