∀ {C : Type u₁} [inst : CategoryTheory.Category.{v₁, u₁} C] [inst_1 : CategoryTheory.MonoidalCategory C]
  [inst_2 : CategoryTheory.BraidedCategory C] (X Y : CategoryTheory.Mon C),
  CategoryTheory.MonObj.one =
    CategoryTheory.CategoryStruct.comp
      (CategoryTheory.MonoidalCategoryStruct.leftUnitor (CategoryTheory.MonoidalCategoryStruct.tensorUnit C)).inv
      (CategoryTheory.MonoidalCategoryStruct.tensorHom CategoryTheory.MonObj.one CategoryTheory.MonObj.one)