∀ {C : Type u₁} [inst : CategoryTheory.Category.{v₁, u₁} C] [inst_1 : CategoryTheory.MonoidalCategory C]
  [inst_2 : CategoryTheory.BraidedCategory C] (X Y : C),
  CategoryTheory.Functor.LaxMonoidal.μ (CategoryTheory.mopFunctor C) X Y = (β_ { unmop := X } { unmop := Y }).hom