fact: Definition verity_double_bicat : UU := ∑ (B : ver_bicat_sq_id_comp_whisker), double_bicat_laws B.
imports: UniMath.MoreFoundations.All UniMath.CategoryTheory.Core.Prelude UniMath.CategoryTheory.TwoSidedDisplayedCats.TwoSidedDispCat UniMath.Bicategories.Core.Bicat