update in ground_2 and basic_2 (partial commit)

[helm.git] / matita / matita / contribs / lambdadelta / ground_2 / pull / pull_2.ma

diff --git a/matita/matita/contribs/lambdadelta/ground_2/pull/pull_2.ma b/matita/matita/contribs/lambdadelta/ground_2/pull/pull_2.ma
new file mode 100644 (file)
index 0000000..dd1411e
--- /dev/null
+++ b/matita/matita/contribs/lambdadelta/ground_2/pull/pull_2.ma
@@ -0,0 +1,24 @@
+(**************************************************************************)
+(*       ___                                                              *)
+(*      ||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 "basics/pts.ma".
+
+(* GENERATED LIBRARY ********************************************************)
+
+lemma pull_2 (A1:Type[0])
+             (A2:Type[0])
+             (A:A1→A2→Type[0]):
+             (∀x2,x1. A x1 x2) →
+             (∀x1,x2. A x1 x2).
+/2 width=1 by/ qed-.