(C : Type u_1) →
  [inst : CategoryTheory.Category.{v_1, u_1} C] →
    [inst_1 : CategoryTheory.HasShift C ℤ] →
      (CategoryTheory.Pretriangulated.TriangleOpEquivalence.inverse C).comp
          (CategoryTheory.Pretriangulated.TriangleOpEquivalence.functor C) ≅
        CategoryTheory.Functor.id (CategoryTheory.Pretriangulated.Triangle Cᵒᵖ)