X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flambdadelta%2Fbasic_2%2Frt_transition%2Fcpx_drops_basic.ma;h=022810c735531780fbc0873e1386f3de854b6729;hb=67fe9cec87e129a2a41c75d7ed8456a6f3314421;hp=09b998bae56e04945e439d25707aa3cc5851b9f1;hpb=a67fc50ccfda64377e2c94c18c3a0d9265f651db;p=helm.git

diff --git a/matita/matita/contribs/lambdadelta/basic_2/rt_transition/cpx_drops_basic.ma b/matita/matita/contribs/lambdadelta/basic_2/rt_transition/cpx_drops_basic.ma
index 09b998bae..022810c73 100644
--- a/matita/matita/contribs/lambdadelta/basic_2/rt_transition/cpx_drops_basic.ma
+++ b/matita/matita/contribs/lambdadelta/basic_2/rt_transition/cpx_drops_basic.ma
@@ -20,8 +20,8 @@ include "basic_2/rt_transition/cpx_drops.ma".
 (* Properties with basic relocation *****************************************)
 
 lemma cpx_subst (h) (G) (L) (U1) (i):
-                ∀I,K,V. ⬇*[i] L ≘ K.ⓑ{I}V →
-                ∃∃U2,T2. ⦃G, L⦄ ⊢ U1 ⬈[h] U2 & ⬆[i,1] T2 ≘ U2.
+                ∀I,K,V. ⇩*[i] L ≘ K.ⓑ{I}V →
+                ∃∃U2,T2. ⦃G,L⦄ ⊢ U1 ⬈[h] U2 & ⇧[i,1] T2 ≘ U2.
 #h #G #L #U1 @(fqup_wf_ind_eq (Ⓣ) … G L U1) -G -L -U1
 #G0 #L0 #U0 #IH #G #L * *
 [ #s #HG #HL #HT #i #I #K #V #_ destruct -IH