{C : Type u_1} →
  [inst : CategoryTheory.Category.{v_1, u_1} C] →
    [inst_1 : CategoryTheory.HasShift C ℤ] →
      {n : ℤ} →
        {X Y : Cᵒᵖ} →
          (Opposite.op ((CategoryTheory.shiftFunctor C n).obj (Opposite.unop X)) ⟶ Y) ≃
            (X ⟶ (CategoryTheory.shiftFunctor Cᵒᵖ n).obj Y)