X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flambda_delta%2Fbasic_2%2Fcomputation%2Fcsn.ma;h=481683f2ab80f237478886669870f30739bca6d6;hb=5ac2dc4e01aca542ddd13c02b304c646d8df9799;hp=903c62ea2eca5351aaad0be7c48a56b7b920612d;hpb=a386e0eb6b20909ae78c825203d77647b8fde30c;p=helm.git

diff --git a/matita/matita/contribs/lambda_delta/basic_2/computation/csn.ma b/matita/matita/contribs/lambda_delta/basic_2/computation/csn.ma
index 903c62ea2..481683f2a 100644
--- a/matita/matita/contribs/lambda_delta/basic_2/computation/csn.ma
+++ b/matita/matita/contribs/lambda_delta/basic_2/computation/csn.ma
@@ -43,7 +43,7 @@ lemma csn_intro: ∀L,T1.
 /4 width=1/ qed.
 
 (* Basic_1: was: sn3_nf2 *)
-lemma csn_cnf: ∀L,T. L ⊢ 𝐍[T] → L ⊢ ⬇* T.
+lemma csn_cnf: ∀L,T. L ⊢ 𝐍⦃T⦄ → L ⊢ ⬇* T.
 /2 width=1/ qed.
 
 lemma csn_cpr_trans: ∀L,T1. L ⊢ ⬇* T1 → ∀T2. L ⊢ T1 ➡ T2 → L ⊢ ⬇* T2.