+++ /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/notation/relations/btpred_8.ma".
-include "basic_2/relocation/fsup.ma".
-include "basic_2/reduction/lpr.ma".
-include "basic_2/dynamic/lsubsv.ma".
-
-(* "BIG TREE" PARALLEL REDUCTION FOR CLOSURES *******************************)
-
-inductive ypr (h) (g) (G1) (L1) (T1): relation3 genv lenv term ≝
-| ypr_fsup : ∀G2,L2,T2. ⦃G1, L1, T1⦄ ⊃ ⦃G2, L2, T2⦄ → ypr h g G1 L1 T1 G2 L2 T2
-| ypr_lpr : ∀L2. ⦃G1, L1⦄ ⊢ ➡ L2 → ypr h g G1 L1 T1 G1 L2 T1
-| ypr_cpr : ∀T2. ⦃G1, L1⦄ ⊢ T1 ➡ T2 → ypr h g G1 L1 T1 G1 L1 T2
-| ypr_ssta : ∀T2,l. ⦃G1, L1⦄ ⊢ T1 ▪[h, g] l+1 → ⦃G1, L1⦄ ⊢ T1 •[h, g] T2 → ypr h g G1 L1 T1 G1 L1 T2
-| ypr_lsubsv: ∀L2. G1 ⊢ L2 ¡⊑[h, g] L1 → ypr h g G1 L1 T1 G1 L2 T1
-.
-
-interpretation
- "'big tree' parallel reduction (closure)"
- 'BTPRed h g G1 L1 T1 G2 L2 T2 = (ypr h g G1 L1 T1 G2 L2 T2).
-
-(* Basic properties *********************************************************)
-
-lemma ypr_refl: ∀h,g. tri_reflexive … (ypr h g).
-/2 width=1/ qed.