- updated equivalence on referred entries: it nust be degree-based

[helm.git] / matita / matita / contribs / lambdadelta / basic_2 / etc_new / unfold / unfold.etc

diff --git a/matita/matita/contribs/lambdadelta/basic_2/etc_new/unfold/unfold.etc b/matita/matita/contribs/lambdadelta/basic_2/etc_new/unfold/unfold.etc
deleted file mode 100644 (file)
index 4454219..0000000
--- a/matita/matita/contribs/lambdadelta/basic_2/etc_new/unfold/unfold.etc
+++ /dev/null
@@ -1,35 +0,0 @@
-(**************************************************************************)
-(*       ___                                                              *)
-(*      ||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/notation/relations/unfold_4.ma".
-include "basic_2/grammar/lenv_append.ma".
-include "basic_2/grammar/genv.ma".
-include "basic_2/substitution/drop.ma".
-
-(* CONTEXT-SENSITIVE UNFOLD FOR TERMS ***************************************)
-
-(* activate genv *)
-inductive unfold: relation4 genv lenv term lenv ≝
-| unfold_sort: ∀G,L,s. unfold G L (⋆s) L
-| unfold_lref: ∀I,G,L1,L2,K1,K2,V,i. ⬇[i] L1 ≡ K1. ⓑ{I}V →
-               unfold G K1 V K2 → ⬇[Ⓣ, |L2|, i] L2 ≡ K2 →
-               unfold G L1 (#i) (L1@@L2)
-| unfold_bind: ∀a,I,G,L1,L2,V,T.
-               unfold G (L1.ⓑ{I}V) T L2 → unfold G L1 (ⓑ{a,I}V.T) L2
-| unfold_flat: ∀I,G,L1,L2,V,T.
-               unfold G L1 T L2 → unfold G L1 (ⓕ{I}V.T) L2
-.
-
-interpretation "context-sensitive unfold (term)"
-   'Unfold G L1 T L2 = (unfold G L1 T L2).