milestone update in ground_2 and basic_2A

[helm.git] / matita / matita / contribs / lambdadelta / ground_2 / lib / lstar_2a.ma

diff --git a/matita/matita/contribs/lambdadelta/ground_2/lib/lstar_2a.ma b/matita/matita/contribs/lambdadelta/ground_2/lib/lstar_2a.ma
new file mode 100644 (file)
index 0000000..ae707f2
--- /dev/null
+++ b/matita/matita/contribs/lambdadelta/ground_2/lib/lstar_2a.ma
@@ -0,0 +1,20 @@
+(**************************************************************************)
+(*       ___                                                              *)
+(*      ||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 "arithmetics/lstar.ma".
+
+(* PROPERTIES OF NAT-LABELED REFLEXIVE AND TRANSITIVE CLOSURE ***************)
+
+definition llstar: ∀A:Type[0]. ∀B. (A→relation B) → nat → (A→relation B) ≝
+                   λA,B,R,l,a. lstar … (R a) l.