∀ {C : Type u_2} [inst : CategoryTheory.Category.{u_1, u_2} C] [inst_1 : CategoryTheory.HasShift C ℤ] {J : Type u_3}
  (T : J → CategoryTheory.Pretriangulated.Triangle C) [inst_2 : CategoryTheory.Limits.HasProduct fun j => (T j).obj₁]
  [inst_3 : CategoryTheory.Limits.HasProduct fun j => (CategoryTheory.shiftFunctor C 1).obj (T j).obj₁],
  CategoryTheory.IsIso (CategoryTheory.Limits.piComparison (CategoryTheory.shiftFunctor C 1) fun j => (T j).obj₁)