∀ {C : Type u₁} [inst : CategoryTheory.Category.{v₁, u₁} C] [inst_1 : CategoryTheory.MonoidalCategory C]
  {X Y : CategoryTheory.LaxMonoidalFunctor (CategoryTheory.Discrete PUnit.{w + 1}) C} (α : X ⟶ Y),
  (CategoryTheory.Mon.equivLaxMonoidalFunctorPUnit.functor.map α).hom =
    α.hom.app (CategoryTheory.MonoidalCategoryStruct.tensorUnit (CategoryTheory.Discrete PUnit.{w + 1}))