- exclusion binder in local environments:

[helm.git] / matita / matita / contribs / lambdadelta / basic_2 / rt_transition / cpx_ext.ma

diff --git a/matita/matita/contribs/lambdadelta/basic_2/rt_transition/cpx_ext.ma b/matita/matita/contribs/lambdadelta/basic_2/rt_transition/cpx_ext.ma
new file mode 100644 (file)
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@@ -0,0 +1,25 @@
+(**************************************************************************)
+(*       ___                                                              *)
+(*      ||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 "basic_2/syntax/lenv_ext2.ma".
+include "basic_2/rt_transition/cpx.ma".
+
+(* UNCOUNTED CONTEXT-SENSITIVE PARALLEL RT-TRANSITION FOR BINDERS ***********)
+
+definition cpx_ext (h) (G): relation3 lenv bind bind ≝
+                            cext2 (cpx h G).
+
+interpretation
+   "uncounted context-sensitive parallel rt-transition (binder)"
+   'PRedTy h G L I1 I2 = (cpx_ext h G L I1 I2).