proposition: Proposition double_cat_to_ver_sq_bicat_prebicat_laws : ver_sq_bicat_prebicat_laws double_cat_to_ver_sq_bicat_id_comp_cells.
proof: Proof. exact (pr21 ℍ). Defined.
imports: UniMath.MoreFoundations.All UniMath.CategoryTheory.Core.Prelude UniMath.CategoryTheory.TwoSidedDisplayedCats.TwoSidedDispCat UniMath.Bicategories.Core.Bicat UniMath.Bicategories.Core.Examples.DiscreteBicat UniMath.Bicategories.DoubleCategories.DoubleBicat.Core UniMath.Bicategories.DoubleCategories.Basics.DoubleCategoryBasics UniMath.Bicategories.DoubleCategories.Core.DoubleCats UniMath.Bicategories.DoubleCategories.DerivedLaws.TransportLaws UniMath.Bicategories.DoubleCategories.Core.UnivalentDoubleCats UniMath.Bicategories.DoubleCategories.Core.CompanionsAndConjoints UniMath.Bicategories.DoubleCategories.Underlying.HorizontalBicategory