{C : Type u} →
  [inst : CategoryTheory.Category.{v, u} C] →
    [inst_1 : CategoryTheory.MonoidalCategory C] →
      (X : C) →
        {Y Z : C} →
          (Y ≅ Z) →
            (CategoryTheory.MonoidalCategoryStruct.tensorObj X Y ≅ CategoryTheory.MonoidalCategoryStruct.tensorObj X Z)