1 (**************************************************************************)
4 (* ||A|| A project by Andrea Asperti *)
6 (* ||I|| Developers: *)
7 (* ||T|| The HELM team. *)
8 (* ||A|| http://helm.cs.unibo.it *)
10 (* \ / This file is distributed under the terms of the *)
11 (* v GNU General Public License Version 2 *)
13 (**************************************************************************)
15 include "delayed_updating/syntax/path_closed.ma".
16 include "delayed_updating/syntax/path_structure.ma".
17 include "delayed_updating/syntax/path_depth.ma".
19 (* CLOSED CONDITION FOR PATH ************************************************)
21 (* Constructions with structure *********************************************)
23 lemma path_closed_structure_depth (o) (p):
26 /2 width=1 by pcc_L_dx, pcc_A_dx, pcc_S_dx/