update in delayed_updating

[helm.git] / matita / matita / contribs / lambdadelta / delayed_updating / etc / unwind2 / unwind_prototerm_eq.etc

diff --git a/matita/matita/contribs/lambdadelta/delayed_updating/etc/unwind2/unwind_prototerm_eq.etc b/matita/matita/contribs/lambdadelta/delayed_updating/etc/unwind2/unwind_prototerm_eq.etc
deleted file mode 100644 (file)
index 15b8cdb..0000000
--- a/matita/matita/contribs/lambdadelta/delayed_updating/etc/unwind2/unwind_prototerm_eq.etc
+++ /dev/null
@@ -1,40 +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 "ground/lib/subset_ext_equivalence.ma".
-include "delayed_updating/unwind2/unwind_eq.ma".
-include "delayed_updating/unwind2/unwind_prototerm.ma".
-
-(* UNWIND FOR PROTOTERM *****************************************************)
-
-(* Constructions with subset_equivalence ************************************)
-
-lemma unwind_term_eq_repl_sn (f1) (f2) (t):
-      f1 ≗ f2 → ▼[f1]t ⇔ ▼[f2]t.
-/3 width=1 by subset_equivalence_ext_f1_exteq, unwind_path_eq_repl/
-qed.
-
-lemma unwind_term_eq_repl_dx (f) (t1) (t2):
-      t1 ⇔ t2 → ▼[f]t1 ⇔ ▼[f]t2.
-/2 width=1 by subset_equivalence_ext_f1_bi/
-qed.
-
-lemma unwind_term_after (f1) (f2) (t):
-      ▼[f2]▼[f1]t ⇔ ▼[f2∘f1]t.
-#f1 #f2 #t @subset_eq_trans
-[
-| @subset_inclusion_ext_f1_compose
-| @subset_equivalence_ext_f1_exteq /2 width=5/
-]
-qed.