From: Claudio Sacerdoti Coen <claudio.sacerdoticoen@unibo.it>
Date: Thu, 28 Jul 2005 15:11:08 +0000 (+0000)
Subject: New tactic: unfold.
X-Git-Tag: V_0_7_2~11
X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=commitdiff_plain;h=d73bd6d966d4aeb509a3cf776708d55560464ec2;p=helm.git

New tactic: unfold.
---

diff --git a/helm/matita/tests/unfold.ma b/helm/matita/tests/unfold.ma
new file mode 100644
index 000000000..ff68d5fd1
--- /dev/null
+++ b/helm/matita/tests/unfold.ma
@@ -0,0 +1,29 @@
+(**************************************************************************)
+(*       ___                                                              *)
+(*      ||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                  *)
+(*                                                                        *)
+(**************************************************************************)
+
+set "baseuri" "cic:/matita/unfold".
+
+alias symbol "plus" (instance 0) = "Coq's natural plus".
+definition myplus \def \lambda x,y. x+y.
+
+lemma lem: \forall n. S (n + n) = (S n) + n.
+ intro; reflexivity.
+qed.
+
+theorem trivial: \forall n. S (myplus n n) = (S n) + n.
+ unfold myplus.
+ intro.
+ rewrite > lem.
+ reflexivity.
+qed.
\ No newline at end of file