update in basic_2 and ground_2

[helm.git] / matita / matita / contribs / lambdadelta / basic_2 / rt_transition / lfpx_drops.ma

diff --git a/matita/matita/contribs/lambdadelta/basic_2/rt_transition/lfpx_drops.ma b/matita/matita/contribs/lambdadelta/basic_2/rt_transition/lfpx_drops.ma
index 258d0c81b1c00be88d794138b0ebbccc766db2ec..94ed9d8bf7212b6dcfeda9a830ba838eb9c41e38 100644 (file)
--- a/matita/matita/contribs/lambdadelta/basic_2/rt_transition/lfpx_drops.ma
+++ b/matita/matita/contribs/lambdadelta/basic_2/rt_transition/lfpx_drops.ma
@@ -12,19 +12,32 @@
 (*                                                                        *)
 (**************************************************************************)
 
-include "basic_2/substitution/lpx_sn_drop.ma".
+include "basic_2/static/lfxs_drops.ma".
 include "basic_2/rt_transition/cpx_drops.ma".
 include "basic_2/rt_transition/lfpx.ma".
 
 (* UNCOUNTED PARALLEL RT-TRANSITION FOR LOCAL ENV.S ON REFERRED ENTRIES *****)
 
-(* Properties on local environment slicing ***********************************)
+(* Properties with generic slicing for local environments *******************)
 
-lemma lpx_drop_conf: ∀h,o,G. dropable_sn (lpx h o G).
-/3 width=6 by lpx_sn_deliftable_dropable, cpx_inv_lift1/ qed-.
+(* Basic_2A1: uses: drop_lpx_trans *) 
+lemma drops_lfpx_trans: ∀h,G. dedropable_sn (cpx h G).
+/3 width=6 by lfxs_liftable_dedropable_sn, cpx_lifts_sn/ qed-.
 
-lemma drop_lpx_trans: ∀h,o,G. dedropable_sn (lpx h o G).
-/3 width=10 by lpx_sn_liftable_dedropable, cpx_lift/ qed-.
+(* Inversion lemmas with generic slicing for local environments *************)
 
-lemma lpx_drop_trans_O1: ∀h,o,G. dropable_dx (lpx h o G).
-/2 width=3 by lpx_sn_dropable/ qed-.
+(* Basic_2A1: uses: lpx_drop_conf *)
+lemma lfpx_drops_conf: ∀h,G. dropable_sn (cpx h G).
+/2 width=5 by lfxs_dropable_sn/ qed-.
+
+(* Basic_2A1: uses: lpx_drop_trans_O1 *)
+lemma lfpx_drops_trans: ∀h,G. dropable_dx (cpx h G).
+/2 width=5 by lfxs_dropable_dx/ qed-.
+
+lemma lfpx_inv_lref_pair_sn: ∀h,G,L1,L2,i. ⦃G, L1⦄ ⊢ ⬈[h, #i] L2 → ∀I,K1,V1. ⬇*[i] L1 ≘ K1.ⓑ{I}V1 →
+                             ∃∃K2,V2. ⬇*[i] L2 ≘ K2.ⓑ{I}V2 & ⦃G, K1⦄ ⊢ ⬈[h, V1] K2 & ⦃G, K1⦄ ⊢ V1 ⬈[h] V2.
+/2 width=3 by lfxs_inv_lref_pair_sn/ qed-.
+
+lemma lfpx_inv_lref_pair_dx: ∀h,G,L1,L2,i. ⦃G, L1⦄ ⊢ ⬈[h, #i] L2 → ∀I,K2,V2. ⬇*[i] L2 ≘ K2.ⓑ{I}V2 →
+                             ∃∃K1,V1. ⬇*[i] L1 ≘ K1.ⓑ{I}V1 & ⦃G, K1⦄ ⊢ ⬈[h, V1] K2 & ⦃G, K1⦄ ⊢ V1 ⬈[h] V2.
+/2 width=3 by lfxs_inv_lref_pair_dx/ qed-.