proposition: Lemma isaprop_is_symmetric_monoidal_functor {C D : category} {M : monoidal C} {N : monoidal D} (HM : symmetric M) (HN : symmetric N) {F : functor C D} (HF : fmonoidal_lax M N F) : isaprop (is_symmetric_monoidal_functor HM HN HF).
proof: Proof. apply impred; intro c; apply impred; intro c'; apply D. Qed.
imports: UniMath.Foundations.All UniMath.MoreFoundations.All UniMath.CategoryTheory.Core.Categories UniMath.CategoryTheory.Core.Functors UniMath.CategoryTheory.Core.NaturalTransformations UniMath.CategoryTheory.Core.Isos UniMath.CategoryTheory.whiskering UniMath.CategoryTheory.Monoidal.WhiskeredBifunctors UniMath.CategoryTheory.Monoidal.Categories UniMath.CategoryTheory.Monoidal.Structure.Symmetric