proposition: Proposition id_h_square_bicat_comp {x y z : B} (h : x -|-> y) (k : y -|-> z) : id_h_square_bicat h ⋆v id_h_square_bicat k = id_h_square_bicat (h · k).
proof: Proof. exact (pr12 (pr2 (pr122 B)) _ _ _ h k). Defined.
imports: UniMath.MoreFoundations.All UniMath.CategoryTheory.Core.Prelude UniMath.CategoryTheory.TwoSidedDisplayedCats.TwoSidedDispCat UniMath.Bicategories.Core.Bicat