∀ (C : Type u_2) [inst : CategoryTheory.Category.{u_1, u_2} C] [inst_1 : CategoryTheory.MonoidalCategory C]
  [inst_2 : CategoryTheory.BraidedCategory C] (X : CategoryTheory.Mon C),
  (CategoryTheory.MonoidalCategoryStruct.leftUnitor ((CategoryTheory.Mon.forget C).obj X)).hom =
    CategoryTheory.CategoryStruct.comp
      (CategoryTheory.MonoidalCategoryStruct.whiskerRight
        (CategoryTheory.Iso.refl (CategoryTheory.MonoidalCategoryStruct.tensorUnit C)).hom
        ((CategoryTheory.Mon.forget C).obj X))
      (CategoryTheory.CategoryStruct.comp
        (CategoryTheory.Iso.refl
            (CategoryTheory.MonoidalCategoryStruct.tensorObj
              ((CategoryTheory.Mon.forget C).obj
                (CategoryTheory.MonoidalCategoryStruct.tensorUnit (CategoryTheory.Mon C)))
              ((CategoryTheory.Mon.forget C).obj X))).hom
        ((CategoryTheory.Mon.forget C).map (CategoryTheory.MonoidalCategoryStruct.leftUnitor X).hom))