- some work on context equivalence of atomic arity assignment

[helm.git] / matita / matita / contribs / lambda_delta / basic_2 / computation / lcprs_lcprs.ma

diff --git a/matita/matita/contribs/lambda_delta/basic_2/computation/lcprs_lcprs.ma b/matita/matita/contribs/lambda_delta/basic_2/computation/lcprs_lcprs.ma
index 03e85b8db680baa48bdf670476c73cf1306c536f..344eae1542957e2f18e49047d560c50f304ebf2c 100644 (file)
--- a/matita/matita/contribs/lambda_delta/basic_2/computation/lcprs_lcprs.ma
+++ b/matita/matita/contribs/lambda_delta/basic_2/computation/lcprs_lcprs.ma
@@ -11,11 +11,20 @@
 (*        v         GNU General Public License Version 2                  *)
 (*                                                                        *)
 (**************************************************************************)
-
+(*
+include "basic_2/reducibility/lcpr_lcpr.ma".
+*)
 include "basic_2/computation/lcprs_cprs.ma".
 
 (* CONTEXT-SENSITIVE PARALLEL COMPUTATION ON LOCAL ENVIRONMENTS *************)
 
+(* Advanced properties ******************************************************)
+
+axiom lcprs_strip: ∀L,L1. L ⊢ ➡* L1 → ∀L2. L ⊢ ➡ L2 →
+                   ∃∃L0. L1 ⊢ ➡ L0 & L2 ⊢ ➡* L0.
+(*
+/3 width=3/ qed.
+*)
 (* Main properties **********************************************************)
 
 theorem lcprs_trans: ∀L1,L. L1 ⊢ ➡* L → ∀L2. L ⊢ ➡* L2 → L1 ⊢ ➡* L2.