X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flambdadelta%2Fbasic_2%2Frt_transition%2Fcpr_drops_basic.ma;h=e01180f09a106b3a468d0348036c016dbe08a1e7;hb=67fe9cec87e129a2a41c75d7ed8456a6f3314421;hp=ab99dbfca2bdbbbcf68b415e530df611ca13e8f8;hpb=86861e6f031df66824a381527dfe847029ff72bc;p=helm.git

diff --git a/matita/matita/contribs/lambdadelta/basic_2/rt_transition/cpr_drops_basic.ma b/matita/matita/contribs/lambdadelta/basic_2/rt_transition/cpr_drops_basic.ma
index ab99dbfca..e01180f09 100644
--- a/matita/matita/contribs/lambdadelta/basic_2/rt_transition/cpr_drops_basic.ma
+++ b/matita/matita/contribs/lambdadelta/basic_2/rt_transition/cpr_drops_basic.ma
@@ -21,8 +21,8 @@ include "basic_2/rt_transition/cpr.ma".
 (* Properties with basic relocation *****************************************)
 
 lemma cpr_subst (h) (G) (L) (U1) (i):
-                ∀K,V. ⬇*[i] L ≘ K.ⓓV →
-                ∃∃U2,T2. ⦃G,L⦄ ⊢ U1 ➡[h] U2 & ⬆[i,1] T2 ≘ U2.
+                ∀K,V. ⇩*[i] L ≘ K.ⓓ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 #K #V #_ destruct -IH