X-Git-Url: http://matita.cs.unibo.it/gitweb/?p=helm.git;a=blobdiff_plain;f=matita%2Fcontribs%2FLAMBDA-TYPES%2FBase-2%2Fpreamble.ma;fp=matita%2Fcontribs%2FLAMBDA-TYPES%2FBase-2%2Fpreamble.ma;h=114efbd53479edff13a2103421c2283d46a30219;hp=0000000000000000000000000000000000000000;hb=f61af501fb4608cc4fb062a0864c774e677f0d76;hpb=58ae1809c352e71e7b5530dc41e2bfc834e1aef1

diff --git a/matita/contribs/LAMBDA-TYPES/Base-2/preamble.ma b/matita/contribs/LAMBDA-TYPES/Base-2/preamble.ma
new file mode 100644
index 000000000..114efbd53
--- /dev/null
+++ b/matita/contribs/LAMBDA-TYPES/Base-2/preamble.ma
@@ -0,0 +1,19 @@
+(**************************************************************************)
+(*       ___                                                              *)
+(*      ||M||                                                             *)
+(*      ||A||       A project by Andrea Asperti                           *)
+(*      ||T||                                                             *)
+(*      ||I||       Developers:                                           *)
+(*      ||T||         The HELM team.                                      *)
+(*      ||A||         http://helm.cs.unibo.it                             *)
+(*      \   /                                                             *)
+(*       \ /        This file is distributed under the terms of the       *)
+(*        v         GNU General Public License Version 2                  *)
+(*                                                                        *)
+(**************************************************************************)
+
+include "Base-1/definitions.ma".
+include "Legacy-2/theory.ma".
+
+alias symbol "minus" = "Coq's natural minus".
+alias symbol "lt" = "Coq's natural 'less than'".