fact: Definition identity_hor_comp_data (C : category) (D : twosided_disp_cat C C) (Cm : hor_comp D) : double_functor_hor_comp_data (twosided_disp_functor_identity D) Cm Cm := λ x y z h k, id_two_disp _.
imports: UniMath.Foundations.All UniMath.MoreFoundations.All UniMath.CategoryTheory.Core.Categories UniMath.CategoryTheory.Core.Functors UniMath.CategoryTheory.Core.Isos UniMath.CategoryTheory.TwoSidedDisplayedCats.TwoSidedDispCat UniMath.CategoryTheory.TwoSidedDisplayedCats.Isos UniMath.CategoryTheory.TwoSidedDisplayedCats.DisplayedFunctor UniMath.Bicategories.DoubleCategories.Basics.DoubleCategoryBasics