ground_2 released and permanently renamed as ground

[helm.git] / matita / matita / contribs / lambdadelta / ground_2 / etc / relocation / trace_isun.etc

diff --git a/matita/matita/contribs/lambdadelta/ground_2/etc/relocation/trace_isun.etc b/matita/matita/contribs/lambdadelta/ground_2/etc/relocation/trace_isun.etc
deleted file mode 100644 (file)
index bdcb249..0000000
--- a/matita/matita/contribs/lambdadelta/ground_2/etc/relocation/trace_isun.etc
+++ /dev/null
@@ -1,48 +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_2/notation/relations/isuniform_1.ma".
-include "ground_2/relocation/trace_isid.ma".
-
-(* RELOCATION TRACE *********************************************************)
-
-inductive isun: predicate trace ≝
-| isun_id   : ∀t. 𝐈⦃t⦄ → isun t
-| isun_false: ∀t. isun t → isun (Ⓕ@t)
-.
-
-interpretation "test for uniformity (trace)"
-   'IsUniform t = (isun t).
-
-(* Basic inversion lennas ***************************************************)
-
-fact isun_inv_true_aux: ∀t. 𝐔⦃t⦄ → ∀u. t = Ⓣ@u → 𝐈⦃u⦄.
-#t * -t
-[ #t #Ht #u #H destruct /2 width=1 by isid_inv_true/
-| #t #_ #u #H destruct
-]
-qed-.
-
-lemma isun_inv_true: ∀t. 𝐔⦃Ⓣ@t⦄ → 𝐈⦃t⦄.
-/2 width=3 by isun_inv_true_aux/ qed-.
-
-fact isun_inv_false_aux: ∀t. 𝐔⦃t⦄ → ∀u. t = Ⓕ@u → 𝐔⦃u⦄.
-#t * -t 
-[ #t #Ht #u #H destruct elim (isid_inv_false … Ht)
-| #t #Ht #u #H destruct //
-]
-qed-.
-
-lemma isun_inv_false: ∀t. 𝐔⦃Ⓕ@t⦄ → 𝐔⦃t⦄.
-/2 width=3 by isun_inv_false_aux/ qed-.