Merge branch 'matita-lablgtk3' of ssh://matita.cs.unibo.it:/srv/git/helm into matita...

[helm.git] / matita / matita / contribs / lambdadelta / basic_2 / etc / cpre / cpre.etc

diff --git a/matita/matita/contribs/lambdadelta/basic_2/etc/cpre/cpre.etc b/matita/matita/contribs/lambdadelta/basic_2/etc/cpre/cpre.etc
deleted file mode 100644 (file)
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--- a/matita/matita/contribs/lambdadelta/basic_2/etc/cpre/cpre.etc
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-(**************************************************************************)
-(*       ___                                                              *)
-(*      ||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/predeval_4.ma".
-include "basic_2/computation/cprs.ma".
-include "basic_2/computation/csx.ma".
-
-(* EVALUATION FOR CONTEXT-SENSITIVE PARALLEL REDUCTION ON TERMS *************)
-
-definition cpre: relation4 genv lenv term term ≝
-                 λG,L,T1,T2. ⦃G, L⦄ ⊢ T1 ➡* T2 ∧ ⦃G, L⦄ ⊢ ➡ 𝐍⦃T2⦄.
-
-interpretation "evaluation for context-sensitive parallel reduction (term)"
-   'PRedEval G L T1 T2 = (cpre G L T1 T2).
-
-(* Basic properties *********************************************************)
-
-(* Basic_1: was just: nf2_sn3 *)
-lemma csx_cpre: ∀h,o,G,L,T1. ⦃G, L⦄ ⊢ ⬊*[h, o] T1 → ∃T2. ⦃G, L⦄ ⊢ T1 ➡* 𝐍⦃T2⦄.
-#h #o #G #L #T1 #H @(csx_ind … H) -T1
-#T1 #_ #IHT1 elim (cnr_dec G L T1) /3 width=3 by ex_intro, conj/
-* #T #H1T1 #H2T1 elim (IHT1 … H2T1) -IHT1 -H2T1 /2 width=2 by cpr_cpx/
-#T2 * /4 width=3 by cprs_strap2, ex_intro, conj/
-qed.