(* This file was automatically generated: do not edit *********************)
-set "baseuri" "cic:/matita/LAMBDA-TYPES/Base-1/ext/arith".
-
-include "preamble.ma".
+include "Base-1/preamble.ma".
theorem nat_dec:
\forall (n1: nat).(\forall (n2: nat).(or (eq nat n1 n2) ((eq nat n1 n2) \to