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(*       ___                                                              *)
(*      ||M||                                                             *)
(*      ||A||       A project by Andrea Asperti                           *)
(*      ||T||                                                             *)
(*      ||I||       Developers:                                           *)
(*      ||T||         The HELM team.                                      *)
(*      ||A||         http://helm.cs.unibo.it                             *)
(*      \   /                                                             *)
(*       \ /        This file is distributed under the terms of the       *)
(*        v         GNU General Public License Version 2                  *)
(*                                                                        *)
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include "delayed_updating/relocation/sbr_pap.ma".
include "ground/relocation/tr_id.ma".

(* POSITIVE APPLICATION FOR STACKS OF BASIC RELOCATION MAPS *****************)

(* Constructions with tr_id *************************************************)

lemma sbr_pap_id (p):
      p = 𝐢❘@❨p❩.
#p elim p -p [| #p #IH ] <tr_id_unfold //
<sbr_pap_unfold_unit_succ //
qed.