X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flambdadelta%2Fbasic_2%2Fcomputation%2Flpxs.ma;h=4cf6a28b419414fb3f84b073eb57ee546b3b35e3;hb=65008df95049eb835941ffea1aa682c9253c4c2b;hp=83f2459e82c0ca6244afbb8a733defd75c902f7e;hpb=c07e9b0a3e65c28ca4154fec76a54a9a118fa7e1;p=helm.git

diff --git a/matita/matita/contribs/lambdadelta/basic_2/computation/lpxs.ma b/matita/matita/contribs/lambdadelta/basic_2/computation/lpxs.ma
index 83f2459e8..4cf6a28b4 100644
--- a/matita/matita/contribs/lambdadelta/basic_2/computation/lpxs.ma
+++ b/matita/matita/contribs/lambdadelta/basic_2/computation/lpxs.ma
@@ -12,6 +12,7 @@
 (*                                                                        *)
 (**************************************************************************)
 
+include "basic_2/notation/relations/predsnstar_4.ma".
 include "basic_2/reduction/lpx.ma".
 include "basic_2/computation/lprs.ma".
 
@@ -40,10 +41,9 @@ qed-.
 
 (* Basic properties *********************************************************)
 
-axiom lprs_lpxs: ∀h,g,L1,L2. L1 ⊢ ➡* L2 → ⦃h, L1⦄ ⊢ ➡*[g] L2.
-(*
+lemma lprs_lpxs: ∀h,g,L1,L2. L1 ⊢ ➡* L2 → ⦃h, L1⦄ ⊢ ➡*[g] L2.
 /3 width=3/ qed.
-*)
+
 lemma lpx_lpxs: ∀h,g,L1,L2. ⦃h, L1⦄ ⊢ ➡[g] L2 → ⦃h, L1⦄ ⊢ ➡*[g] L2.
 /2 width=1/ qed.