fact: Definition bcat_cell_struct : prebicat_2cell_struct bcat_precategory_ob_mor := λ (a b : C) (f g : homcat a b), (homcat a b) ⟦ f, g ⟧.
imports: UniMath.Foundations.All UniMath.MoreFoundations.All UniMath.CategoryTheory.Core.Categories UniMath.CategoryTheory.Core.Isos UniMath.CategoryTheory.Core.Univalence UniMath.CategoryTheory.Core.Functors UniMath.CategoryTheory.PrecategoryBinProduct UniMath.CategoryTheory.HorizontalComposition UniMath.Bicategories.WkCatEnrichment.prebicategory UniMath.Bicategories.WkCatEnrichment.whiskering UniMath.Bicategories.Core.Bicat UniMath.Bicategories.WkCatEnrichment.Notations