added interpretation for \naturals, \rationals, and \integers

[helm.git] / helm / software / matita / library / nat / nat.ma

diff --git a/helm/software/matita/library/nat/nat.ma b/helm/software/matita/library/nat/nat.ma
index 9fce4df76a8b3dfbd7071582202ea648676d884b..c54b41c8d71e73262c949ea5043b6ddd2c4cc5d4 100644 (file)
--- a/helm/software/matita/library/nat/nat.ma
+++ b/helm/software/matita/library/nat/nat.ma
@@ -18,6 +18,8 @@ inductive nat : Set \def
   | O : nat
   | S : nat \to nat.
 
+interpretation "Natural numbers" 'N = nat.
+
 definition pred: nat \to nat \def
  \lambda n:nat. match n with
  [ O \Rightarrow  O