X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=helm%2Fsoftware%2Fmatita%2Flibrary%2Fnat%2Fnat.ma;h=83b489f06eb08a6772e0d7abb00e315032604ad0;hb=3cf6181bded05eb63140d1b2ba4f2f5791a73b48;hp=b098279e62e9ed3ecf1cf99a04e564faaf3bbf2c;hpb=eac90238cf23594c64e305d2945fd29ed075df0a;p=helm.git

diff --git a/helm/software/matita/library/nat/nat.ma b/helm/software/matita/library/nat/nat.ma
index b098279e6..83b489f06 100644
--- a/helm/software/matita/library/nat/nat.ma
+++ b/helm/software/matita/library/nat/nat.ma
@@ -1,5 +1,5 @@
 (**************************************************************************)
-(*       ___	                                                              *)
+(*       ___	                                                          *)
 (*      ||M||                                                             *)
 (*      ||A||       A project by Andrea Asperti                           *)
 (*      ||T||                                                             *)
@@ -19,6 +19,9 @@ inductive nat : Set \def
   | S : nat \to nat.
 
 interpretation "Natural numbers" 'N = nat.
+
+default "natural numbers" cic:/matita/nat/nat/nat.ind.
+
 alias num (instance 0) = "natural number".
 
 definition pred: nat \to nat \def