update in static_2

[helm.git] / matita / matita / contribs / lambdadelta / static_2 / static / feqg_fqup.ma

diff --git a/matita/matita/contribs/lambdadelta/static_2/static/feqg_fqup.ma b/matita/matita/contribs/lambdadelta/static_2/static/feqg_fqup.ma
new file mode 100644 (file)
index 0000000..e50f408
--- /dev/null
+++ b/matita/matita/contribs/lambdadelta/static_2/static/feqg_fqup.ma
@@ -0,0 +1,33 @@
+(**************************************************************************)
+(*       ___                                                              *)
+(*      ||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 "static_2/static/reqg_fqup.ma".
+include "static_2/static/feqg.ma".
+
+(* GENERIC EQUIVALENCE FOR CLOSURES ON REFERRED ENTRIES *********************)
+
+(* Properties with generic equivalence for terms ****************************)
+
+lemma teqg_feqg (S):
+      reflexive … S →
+      ∀T1,T2. T1 ≛[S] T2 →
+      ∀G,L. ❪G,L,T1❫ ≛[S] ❪G,L,T2❫.
+/3 width=1 by feqg_intro_sn, reqg_refl/ qed.
+
+(* Advanced properties ******************************************************)
+
+lemma feqg_refl (S):
+      reflexive … S →
+      tri_reflexive … (feqg S).
+/3 width=1 by teqg_refl, teqg_feqg/ qed.