fact: Definition id_v_square_bicat {B : ver_bicat_sq_bicat_ver_id_comp} {x y : B} (h : x --> y) : square_double_bicat h h (id_v x) (id_v y) := pr12 B x y h.
imports: UniMath.MoreFoundations.All UniMath.CategoryTheory.Core.Prelude UniMath.CategoryTheory.TwoSidedDisplayedCats.TwoSidedDispCat UniMath.Bicategories.Core.Bicat