X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flambdadelta%2Fstatic_2%2Fs_computation%2Ffqup_drops.ma;h=e72eced2edd079543a47ddbce414bab3a2f5f65c;hb=67fe9cec87e129a2a41c75d7ed8456a6f3314421;hp=c21d46c6026be363201aa91140a85b6e272829f8;hpb=86861e6f031df66824a381527dfe847029ff72bc;p=helm.git

diff --git a/matita/matita/contribs/lambdadelta/static_2/s_computation/fqup_drops.ma b/matita/matita/contribs/lambdadelta/static_2/s_computation/fqup_drops.ma
index c21d46c60..e72eced2e 100644
--- a/matita/matita/contribs/lambdadelta/static_2/s_computation/fqup_drops.ma
+++ b/matita/matita/contribs/lambdadelta/static_2/s_computation/fqup_drops.ma
@@ -19,7 +19,7 @@ include "static_2/s_computation/fqup.ma".
 
 (* Properties with generic slicing for local environments *******************)
 
-lemma fqup_drops_succ: ∀b,G,K,T,i,L,U. ⬇*[↑i] L ≘ K → ⬆*[↑i] T ≘ U →
+lemma fqup_drops_succ: ∀b,G,K,T,i,L,U. ⇩*[↑i] L ≘ K → ⇧*[↑i] T ≘ U →
                        ⦃G,L,U⦄ ⬂+[b] ⦃G,K,T⦄.
 #b #G #K #T #i elim i -i
 [ #L #U #HLK #HTU elim (drops_inv_succ … HLK) -HLK
@@ -32,7 +32,7 @@ lemma fqup_drops_succ: ∀b,G,K,T,i,L,U. ⬇*[↑i] L ≘ K → ⬆*[↑i] T ≘
 ]
 qed.
 
-lemma fqup_drops_strap1: ∀b,G1,G2,L1,K1,K2,T1,T2,U1,i. ⬇*[i] L1 ≘ K1 → ⬆*[i] T1 ≘ U1 →
+lemma fqup_drops_strap1: ∀b,G1,G2,L1,K1,K2,T1,T2,U1,i. ⇩*[i] L1 ≘ K1 → ⇧*[i] T1 ≘ U1 →
                          ⦃G1,K1,T1⦄ ⬂[b] ⦃G2,K2,T2⦄ → ⦃G1,L1,U1⦄ ⬂+[b] ⦃G2,K2,T2⦄.
 #b #G1 #G2 #L1 #K1 #K2 #T1 #T2 #U1 *
 [ #HLK1 #HTU1 #HT12
@@ -42,5 +42,5 @@ lemma fqup_drops_strap1: ∀b,G1,G2,L1,K1,K2,T1,T2,U1,i. ⬇*[i] L1 ≘ K1 → 
 ]
 qed-.
 
-lemma fqup_lref: ∀b,I,G,L,K,V,i. ⬇*[i] L ≘ K.ⓑ{I}V → ⦃G,L,#i⦄ ⬂+[b] ⦃G,K,V⦄.
+lemma fqup_lref: ∀b,I,G,L,K,V,i. ⇩*[i] L ≘ K.ⓑ{I}V → ⦃G,L,#i⦄ ⬂+[b] ⦃G,K,V⦄.
 /2 width=6 by fqup_drops_strap1/ qed.