X-Git-Url: http://matita.cs.unibo.it/gitweb/?p=helm.git;a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flambdadelta%2Fbasic_2%2Frt_computation%2Flfsx.ma;h=4258c13ddf74df495bce132d6056815cf34437a8;hp=bf17640ddde9733852d02b281e361b83a2082825;hb=9323611e3819c1382b872a7ada00264991f36217;hpb=b0eb62e60a2fd73ba39c7a0df112f04131528602

diff --git a/matita/matita/contribs/lambdadelta/basic_2/rt_computation/lfsx.ma b/matita/matita/contribs/lambdadelta/basic_2/rt_computation/lfsx.ma
index bf17640dd..4258c13dd 100644
--- a/matita/matita/contribs/lambdadelta/basic_2/rt_computation/lfsx.ma
+++ b/matita/matita/contribs/lambdadelta/basic_2/rt_computation/lfsx.ma
@@ -35,7 +35,7 @@ lemma lfsx_ind: ∀h,o,G,T. ∀R:predicate lenv.
                 ) →
                 ∀L. G ⊢ ⬈*[h, o, T] 𝐒⦃L⦄ → R L.
 #h #o #G #T #R #H0 #L1 #H elim H -L1
-/5 width=1 by lfdeq_sym, SN_intro/
+/5 width=1 by SN_intro/
 qed-.
 
 (* Basic properties *********************************************************)
@@ -44,7 +44,7 @@ qed-.
 lemma lfsx_intro: ∀h,o,G,L1,T.
                   (∀L2. ⦃G, L1⦄ ⊢ ⬈[h, T] L2 → (L1 ≛[h, o, T] L2 → ⊥) → G ⊢ ⬈*[h, o, T] 𝐒⦃L2⦄) →
                   G ⊢ ⬈*[h, o, T] 𝐒⦃L1⦄.
-/5 width=1 by lfdeq_sym, SN_intro/ qed.
+/5 width=1 by SN_intro/ qed.
 
 (* Basic_2A1: uses: lsx_sort *)
 lemma lfsx_sort: ∀h,o,G,L,s. G ⊢ ⬈*[h, o, ⋆s] 𝐒⦃L⦄.