fact: Definition monoidal_struct (C : category) : UU := ∑ M : tensor_unit_unitors_associator C, pentagontriangle M × unitorsassociator_inverses M.
imports: UniMath.Foundations.All UniMath.MoreFoundations.All UniMath.CategoryTheory.Core.Categories UniMath.CategoryTheory.Monoidal.WhiskeredBifunctors UniMath.CategoryTheory.Monoidal.Categories