X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flambdadelta%2Fbasic_2%2Fdynamic%2Flsubsv_ldrop.ma;h=3897a75fac2a16f9b04d19a7f8aba202603bff68;hb=f282b35b958c9602fb1f47e5677b5805a046ac76;hp=3f184b6d25eaaadbfdfd812fcd09e767fea69710;hpb=cb5ca7ea4e826e9331eabeaea44353caab00071e;p=helm.git

diff --git a/matita/matita/contribs/lambdadelta/basic_2/dynamic/lsubsv_ldrop.ma b/matita/matita/contribs/lambdadelta/basic_2/dynamic/lsubsv_ldrop.ma
index 3f184b6d2..3897a75fa 100644
--- a/matita/matita/contribs/lambdadelta/basic_2/dynamic/lsubsv_ldrop.ma
+++ b/matita/matita/contribs/lambdadelta/basic_2/dynamic/lsubsv_ldrop.ma
@@ -19,9 +19,9 @@ include "basic_2/dynamic/lsubsv.ma".
 (* Properties concerning basic local environment slicing ********************)
 
 (* Note: the constant 0 cannot be generalized *)
-lemma lsubsv_ldrop_O1_conf: ∀h,g,G,L1,L2. G ⊢ L1 ¡⊑[h, g] L2 →
+lemma lsubsv_ldrop_O1_conf: ∀h,g,G,L1,L2. G ⊢ L1 ¡⫃[h, g] L2 →
                             ∀K1,s,e. ⇩[s, 0, e] L1 ≡ K1 →
-                            ∃∃K2. G ⊢ K1 ¡⊑[h, g] K2 & ⇩[s, 0, e] L2 ≡ K2.
+                            ∃∃K2. G ⊢ K1 ¡⫃[h, g] K2 & ⇩[s, 0, e] L2 ≡ K2.
 #h #g #G #L1 #L2 #H elim H -L1 -L2
 [ /2 width=3 by ex2_intro/
 | #I #L1 #L2 #V #_ #IHL12 #K1 #s #e #H
@@ -42,9 +42,9 @@ lemma lsubsv_ldrop_O1_conf: ∀h,g,G,L1,L2. G ⊢ L1 ¡⊑[h, g] L2 →
 qed-.
 
 (* Note: the constant 0 cannot be generalized *)
-lemma lsubsv_ldrop_O1_trans: ∀h,g,G,L1,L2. G ⊢ L1 ¡⊑[h, g] L2 →
+lemma lsubsv_ldrop_O1_trans: ∀h,g,G,L1,L2. G ⊢ L1 ¡⫃[h, g] L2 →
                              ∀K2,s, e. ⇩[s, 0, e] L2 ≡ K2 →
-                             ∃∃K1. G ⊢ K1 ¡⊑[h, g] K2 & ⇩[s, 0, e] L1 ≡ K1.
+                             ∃∃K1. G ⊢ K1 ¡⫃[h, g] K2 & ⇩[s, 0, e] L1 ≡ K1.
 #h #g #G #L1 #L2 #H elim H -L1 -L2
 [ /2 width=3 by ex2_intro/
 | #I #L1 #L2 #V #_ #IHL12 #K2 #s #e #H