Definition. Let and be promonoidal categories. A promonoidal functor is a functor between the two categories together with transformations that behave nicely with associators and unitors, satisfying , , and .
Proposition. A promonoidal functor extends to a multifunctor between the induced multicategories.
Tags: multicategory - promonoidal category, multicategory, Promonoidals as multicategories that factor.