X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flambda_delta%2Fbasic_2%2Freducibility%2Fcpr_cpr.ma;h=aadf05b82bf4d9775b47def00d1c0ab9019875dd;hb=78d4844bcccb3deb58a3179151c3045298782b18;hp=4fa94673eb8f97a7dcf89a9118bd3fc882fbce39;hpb=a8c166f1e1baeeae04553058bd179420ada8bbe7;p=helm.git

diff --git a/matita/matita/contribs/lambda_delta/basic_2/reducibility/cpr_cpr.ma b/matita/matita/contribs/lambda_delta/basic_2/reducibility/cpr_cpr.ma
index 4fa94673e..aadf05b82 100644
--- a/matita/matita/contribs/lambda_delta/basic_2/reducibility/cpr_cpr.ma
+++ b/matita/matita/contribs/lambda_delta/basic_2/reducibility/cpr_cpr.ma
@@ -43,7 +43,7 @@ qed.
 
 (* Advanced forward lemmas **************************************************)
 
-lemma cpr_shift_fwd: ∀L,T1,T2. L ⊢ T1 ➡ T2 → L @ T1 ➡ L @ T2.
+lemma cpr_shift_fwd: ∀L,T1,T2. L ⊢ T1 ➡ T2 → L @@ T1 ➡ L @@ T2.
 #L elim L -L
 [ #T1 #T2 #HT12 @(cpr_inv_atom … HT12)
 | normalize /3 width=1/