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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 "ground/relocation/rtmap_sor.ma".

(* RELOCATION P-STREAM ******************************************************)

axiom union: gr_map → gr_map → gr_map.

interpretation "union (nstream)"
   'union f1 f2 = (union f1 f2).

(* Properties on sor (specific) ***********************************************)

axiom sor_total: ∀f1,f2. f1 ⋓ f2 ≘ f1 ∪ f2.