milestone update in ground_2 and basic_2A

[helm.git] / matita / matita / contribs / lambdadelta / basic_2A / etc / llpr / llpx_sn_llpx_sn.etc

diff --git a/matita/matita/contribs/lambdadelta/basic_2A/etc/llpr/llpx_sn_llpx_sn.etc b/matita/matita/contribs/lambdadelta/basic_2A/etc/llpr/llpx_sn_llpx_sn.etc
new file mode 100644 (file)
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+++ b/matita/matita/contribs/lambdadelta/basic_2A/etc/llpr/llpx_sn_llpx_sn.etc
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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 "basic_2/relocation/llpx_sn.ma".
+
+(* LAZY SN POINTWISE EXTENSION OF A CONTEXT-SENSITIVE REALTION FOR TERMS ****)
+
+definition llpx_sn_confluent2: relation (lenv→relation term) ≝ λR1,R2.
+                               ∀L0,T0,T1. R1 L0 T0 T1 → ∀T2. R2 L0 T0 T2 →
+                               ∀L1. llpx_sn R1 0 T0 L0 L1 → ∀L2. llpx_sn R2 0 T0 L0 L2 →
+                               ∃∃T. R2 L1 T1 T & R1 L2 T2 T.
+
+(* Note: we miss llpx_sn_conf and derivatives: lpr_conf lprs_conf *)