propagating the arithmetics library, partial commit

[helm.git] / matita / matita / contribs / lambdadelta / ground / relocation / pstream_sor.ma

diff --git a/matita/matita/contribs/lambdadelta/ground/relocation/pstream_sor.ma b/matita/matita/contribs/lambdadelta/ground/relocation/pstream_sor.ma
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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                  *)
+(*                                                                        *)
+(**************************************************************************)
+
+include "ground/relocation/rtmap_sor.ma".
+
+(* RELOCATION N-STREAM ******************************************************)
+
+axiom union: rtmap → rtmap → rtmap.
+
+interpretation "union (nstream)"
+   'union f1 f2 = (union f1 f2).
+
+(* Specific properties on sor ***********************************************)
+
+axiom sor_total: ∀f1,f2. f1 ⋓ f2 ≘ f1 ∪ f2.