AMBDA-TYPES: some improvements. subst now fully exploited

[helm.git] / matita / contribs / RELATIONAL / datatypes / Nat.ma

diff --git a/matita/contribs/RELATIONAL/datatypes/Nat.ma b/matita/contribs/RELATIONAL/datatypes/Nat.ma
index 3a3a4f5ed8b6493c8427f5fb55db192efe111556..75a3c58d368083e3ebac90a786b29bc093b6fe38 100644 (file)
--- a/matita/contribs/RELATIONAL/datatypes/Nat.ma
+++ b/matita/contribs/RELATIONAL/datatypes/Nat.ma
@@ -16,7 +16,7 @@ set "baseuri" "cic:/matita/RELATIONAL/datatypes/Nat".
 
 include "preamble.ma".
 
-inductive Nat: Set \def
+inductive Nat: Type \def
    | zero: Nat
    | succ: Nat \to Nat
 .