spotted missing times notation

diff --git a/helm/matita/library/nat/times.ma b/helm/matita/library/nat/times.ma
index 876dfecce3de966dc4e2594bf9d566f4b6f6e9e8..8c53a56c8adfb7872ffa6a846525edf58069cc60 100644 (file)
--- a/helm/matita/library/nat/times.ma
+++ b/helm/matita/library/nat/times.ma
@@ -43,7 +43,7 @@ reflexivity.
 apply assoc_plus.
 qed.
 
-theorem times_n_SO : \forall n:nat. eq nat n (times n (S O)).
+theorem times_n_SO : \forall n:nat. n = n * S O.
 intros.
 rewrite < times_n_Sm.
 rewrite < times_n_O.