+++ /dev/null
-(**************************************************************************)
-(* ___ *)
-(* ||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/reducibility/cpr_delift.ma".
-include "basic_2/reducibility/cpr_cpr.ma".
-include "basic_2/computation/cprs.ma".
-
-(* CONTEXT-SENSITIVE PARALLEL COMPUTATION ON TERMS **************************)
-
-(* Properties on inverse basic term relocation ******************************)
-
-(* Note: this should be stated with tprs *)
-lemma cprs_zeta_delift: ∀L,V,T1,T2. L.ⓓV ⊢ ▼*[O, 1] T1 ≡ T2 → L ⊢ +ⓓV.T1 ➡* T2.
-#L #V #T1 #T2 * #T #HT1 #HT2
-@(cprs_strap2 … (+ⓓV.T)) [ /3 width=3/ | @inj /3 width=3/ ] (**) (* explicit constructor, /5 width=3/ is too slow *)
-qed.
-
-(* Basic_1: was only: pr3_gen_cabbr *)
-lemma thin_cprs_delift_conf: ∀L,U1,U2. L ⊢ U1 ➡* U2 →
- ∀K,d,e. ▼*[d, e] L ≡ K → ∀T1. L ⊢ ▼*[d, e] U1 ≡ T1 →
- ∃∃T2. K ⊢ T1 ➡* T2 & L ⊢ ▼*[d, e] U2 ≡ T2.
-#L #U1 #U2 #H @(cprs_ind … H) -U2 /2 width=3/
-#U #U2 #_ #HU2 #IHU1 #K #d #e #HLK #T1 #HTU1
-elim (IHU1 … HLK … HTU1) -U1 #T #HT1 #HUT
-elim (thin_cpr_delift_conf … HU2 … HLK … HUT) -U -HLK /3 width=3/
-qed.