X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flambdadelta%2Fbasic_2%2Frt_transition%2Flfpx_frees.ma;h=46fd8a2291071096667a73235ec18309b94219ca;hb=52616a7a6a550efd75ed56e7e246132453506002;hp=d9f6445a07ec2e8f67cc592072da2f24a4236528;hpb=d64b4238ec803353f0a06f2aad25c173852b0526;p=helm.git

diff --git a/matita/matita/contribs/lambdadelta/basic_2/rt_transition/lfpx_frees.ma b/matita/matita/contribs/lambdadelta/basic_2/rt_transition/lfpx_frees.ma
index d9f6445a0..46fd8a229 100644
--- a/matita/matita/contribs/lambdadelta/basic_2/rt_transition/lfpx_frees.ma
+++ b/matita/matita/contribs/lambdadelta/basic_2/rt_transition/lfpx_frees.ma
@@ -11,95 +11,146 @@
 (*        v         GNU General Public License Version 2                  *)
 (*                                                                        *)
 (**************************************************************************)
-(*
-include "basic_2/multiple/frees_lreq.ma".
-include "basic_2/multiple/frees_lift.ma".
-*)
-include "basic_2/s_computation/fqup_weight.ma".
+
+include "basic_2/relocation/drops_lexs.ma".
+include "basic_2/static/frees_drops.ma".
+include "basic_2/static/lsubf_frees.ma".
+include "basic_2/static/lfxs.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 with context-sensitive free variables ***************************)
+(* Properties with context-sensitive free variables *************************)
 
-lemma lpx_cpx_frees_fwd_sge: ∀h,G,L1,U1,U2. ⦃G, L1⦄ ⊢ U1 ⬈[h] U2 →
-                             ∀L2. ⦃G, L1⦄ ⊢ ⬈[h, U1] L2 →
-                             ∀g1. L1 ⊢ 𝐅*⦃U1⦄ ≡ g1 → ∀g2. L2 ⊢ 𝐅*⦃U2⦄ ≡ g2 →
-                             g2 ⊆ g1.
-#h #G #L1 #U1 @(fqup_wf_ind_eq … G L1 U1) -G -L1 -U1
+(* Basic_2A1: was: lpx_cpx_frees_trans *)
+lemma cpx_frees_conf_lfpx: ∀h,G,L1,T1,f1. L1 ⊢ 𝐅*⦃T1⦄ ≡ f1 →
+                           ∀L2. L1 ⦻*[cpx h G, cfull, f1] L2 →
+                           ∀T2. ⦃G, L1⦄ ⊢ T1 ⬈[h] T2 →
+                           ∃∃f2. L2 ⊢ 𝐅*⦃T2⦄ ≡ f2 & f2 ⊆ f1.
+#h #G #L1 #T1 @(fqup_wf_ind_eq … G L1 T1) -G -L1 -T1
 #G0 #L0 #U0 #IH #G #L1 * *
-[ #s #HG #HL #HU #U2 #H0 #L2 #_ #g1 #H1 #g2 #H2 -IH -G0 -L0 -U0
+[ -IH #s #HG #HL #HU #g1 #H1 #L2 #_ #U2 #H0 destruct
+  lapply (frees_inv_sort … H1) -H1 #Hg1
   elim (cpx_inv_sort1 … H0) -H0 #H destruct
-  /3 width=3 by frees_inv_sort, sle_isid_sn/
-| #i #HG #HL #HU #U2 #H0 #L2 #HL12 #g1 #H1 #g2 #H2 destruct
-  elim (cpx_inv_lref1_drops … H0) -H0
-  [ #H destruct
-    lapply (frees_inv_lref … H1) -H1 #Hg1
-    lapply (frees_inv_sort … H2) -H2 #Hg2 /2 width=1 by sle_isid_sn/  
-
-
-
-| #l #HG #HL #HU #U2 #H0 #L2 #_ #g1 #H1 #g2 #H2 -IH -G0 -L0 -U0
-  lapply (cpx_inv_gref1 … H0) -H0 #H destruct
-  /3 width=3 by frees_inv_gref, sle_isid_sn/
-  
-| #j #HG #HL #HU #U2 #H1 #L2 #HL12 #i #H2 elim (cpx_inv_lref1 … H1) -H1
-  [ #H destruct elim (frees_inv_lref … H2) -H2 //
-    * #I #K2 #W2 #Hj #Hji #HLK2 #HW2
-    elim (lpx_drop_trans_O1 … HL12 … HLK2) -HL12 #Y #HLK1 #H
-    elim (lpx_inv_pair2 … H) -H #K1 #W1 #HK12 #HW12 #H destruct
-    /4 width=11 by frees_lref_be, fqup_lref/
-  | * #I #K1 #W1 #W0 #HLK1 #HW10 #HW0U2
-    lapply (drop_fwd_drop2 … HLK1) #H0
-    elim (lpx_drop_conf … H0 … HL12) -H0 -HL12 #K2 #HK12 #HLK2
-    elim (ylt_split i (j+1)) >yplus_SO2 #Hji
-    [ -IH elim (frees_inv_lift_be … H2 … HLK2 … HW0U2) /2 width=1 by ylt_fwd_succ2/
-    | lapply (frees_inv_lift_ge … H2 … HLK2 … HW0U2 ?) -L2 -U2 // destruct
-      /4 width=11 by frees_lref_be, fqup_lref, yle_succ1_inj/
+  /3 width=3 by frees_sort_gen, sle_refl, ex2_intro/
+| #i #HG #HL #HU #g1 #H1 #L2 #H2 #U2 #H0 destruct
+  elim (frees_inv_lref_drops … H1) -H1 *
+  [ -IH #HL1 #Hg1
+    elim (cpx_inv_lref1_drops … H0) -H0
+    [ #H destruct
+      /5 width=9 by frees_lref_atom, drops_atom2_lexs_conf, coafter_isuni_isid, sle_refl, ex2_intro/
+    | * -H2 -Hg1 #I #K1 #V1 #V2 #HLK1
+      lapply (drops_TF … HLK1) -HLK1 #HLK1
+      lapply (drops_mono … HLK1 … HL1) -L1 #H destruct
+    ]
+  | #f1 #I #K1 #V1 #Hf1 #HLK1 #H destruct
+    elim (cpx_inv_lref1_drops … H0) -H0
+    [ #H destruct
+      elim (lexs_drops_conf_next … H2 … HLK1) -H2 [ |*: // ] #K2 #V2 #HLK2 #HK12 #HV12
+      elim (IH … Hf1 … HK12 … HV12) /2 width=2 by fqup_lref/ -L1 -K1 -V1 #f2 #Hf2 #Hf21
+      /4 width=7 by frees_lref_pushs, frees_lref_pair, drops_refl, sle_next, ex2_intro, sle_pushs/
+    | * #J #Y #X #V2 #H #HV12 #HVU2
+      lapply (drops_mono … H … HLK1) -H #H destruct
+      elim (lexs_drops_conf_next … H2 … HLK1) -H2 [ |*: // ] #K2 #V0 #HLK2 #HK12 #_
+      lapply (drops_isuni_fwd_drop2 … HLK2) // -V0 #HLK2
+      elim (IH … Hf1 … HK12 … HV12) /2 width=2 by fqup_lref/ -I -L1 -K1 -V1 #f2 #Hf2 #Hf21
+      lapply (frees_lifts … Hf2 … HLK2 … HVU2 ??) /4 width=7 by sle_weak, ex2_intro, sle_pushs/
     ]
   ]
-| -IH #p #HG #HL #HU #U2 #H1 >(cpx_inv_gref1 … H1) -H1 destruct
-   #L2 #_ #i #H2 elim (frees_inv_gref … H2)
-| #a #I #W1 #U1 #HG #HL #HU #X #HX #L2 #HL12 #i #Hi destruct
-  elim (cpx_inv_bind1 … HX) -HX *
-  [ #W2 #U2 #HW12 #HU12 #H destruct
-    elim (frees_inv_bind_O … Hi) -Hi
-    /4 width=7 by frees_bind_dx_O, frees_bind_sn, lpx_pair/
-  | #U2 #HU12 #HXU2 #H1 #H2 destruct
-    lapply (frees_lift_ge … Hi (L2.ⓓW1) (Ⓕ) … HXU2 ?)
-    /4 width=7 by frees_bind_dx_O, lpx_pair, drop_drop/
+| -IH #l #HG #HL #HU #g1 #H1 #L2 #_ #U2 #H0 destruct
+  lapply (frees_inv_gref … H1) -H1 #Hg1
+  lapply (cpx_inv_gref1 … H0) -H0 #H destruct
+  /3 width=3 by frees_gref_gen, sle_refl, ex2_intro/
+| #p #I #V1 #T1 #HG #HL #HU #g1 #H1 #L2 #H2 #U2 #H0 destruct
+  elim (frees_inv_bind … H1) -H1 #gV1 #gT1 #HgV1 #HgT1 #Hg1
+  elim (cpx_inv_bind1 … H0) -H0 *
+  [ #V2 #T2 #HV12 #HT12 #H destruct
+    lapply (sle_lexs_trans … H2 gV1 ?) /2 width=2 by sor_inv_sle_sn/ #HL12V
+    lapply (sle_lexs_trans … H2 (⫱gT1) ?) /2 width=2 by sor_inv_sle_dx/ -H2 #HL12T
+    lapply (lexs_inv_tl … I … HL12T … HV12 ?) // -HL12T #HL12T
+    elim (IH … HgV1 … HL12V … HV12) // -HgV1 -HL12V -HV12 #gV2 #HgV2 #HgV21
+    elim (IH … HgT1 … HL12T … HT12) // -IH -HgT1 -HL12T -HT12 #gT2 #HgT2 #HgT21
+    elim (sor_isfin_ex gV2 (⫱gT2)) /3 width=3 by frees_fwd_isfin, isfin_tl/
+    /4 width=10 by frees_bind, monotonic_sle_sor, sle_tl, ex2_intro/
+  | #T2 #HT12 #HUT2 #H0 #H1 destruct -HgV1
+    lapply (sle_lexs_trans … H2 (⫱gT1) ?) /2 width=2 by sor_inv_sle_dx/ -H2 #HL12T
+    lapply (lexs_inv_tl … Abbr … V1 V1 HL12T ??) // -HL12T #HL12T
+    elim (IH … HgT1 … HL12T … HT12) // -L1 -T1 #gT2 #HgT2 #HgT21
+    lapply (frees_inv_lifts_SO (Ⓣ) … HgT2 … L2 … HUT2) [ /3 width=1 by drops_refl, drops_drop/ ] -V1 -T2
+    /5 width=6 by sor_inv_sle_dx, sle_trans, sle_tl, ex2_intro/
   ]
-| #I #W1 #X1 #HG #HL #HU #X2 #HX2 #L2 #HL12 #i #Hi destruct
-  elim (cpx_inv_flat1 … HX2) -HX2 *
-  [ #W2 #U2 #HW12 #HU12 #H destruct
-    elim (frees_inv_flat … Hi) -Hi /3 width=7 by frees_flat_dx, frees_flat_sn/
-  | #HU12 #H destruct /3 width=7 by frees_flat_dx/
-  | #HW12 #H destruct /3 width=7 by frees_flat_sn/
-  | #b #W2 #V1 #V2 #U1 #U2 #HW12 #HV12 #HU12 #H1 #H2 #H3 destruct
-    elim (frees_inv_bind … Hi) -Hi #Hi
-    [ elim (frees_inv_flat … Hi) -Hi
-      /4 width=7 by frees_flat_dx, frees_flat_sn, frees_bind_sn/
-    | lapply (lreq_frees_trans … Hi (L2.ⓛV2) ?) /2 width=1 by lreq_succ/ -Hi #HU2
-      lapply (frees_weak … HU2 0 ?) -HU2
-      /5 width=7 by frees_bind_dx_O, frees_flat_dx, lpx_pair/
-    ]
-  | #b #W2 #W0 #V1 #V2 #U1 #U2 #HW12 #HW20 #HV12 #HU12 #H1 #H2 #H3 destruct
-    elim (frees_inv_bind_O … Hi) -Hi #Hi
-    [ /4 width=7 by frees_flat_dx, frees_bind_sn/
-    | elim (frees_inv_flat … Hi) -Hi
-      [ #HW0 lapply (frees_inv_lift_ge … HW0 L2 (Ⓕ) … HW20 ?) -W0
-        /3 width=7 by frees_flat_sn, drop_drop/
-      | /5 width=7 by frees_bind_dx_O, frees_flat_dx, lpx_pair/
-      ]
+| #I #V1 #T0 #HG #HL #HU #g1 #H1 #L2 #H2 #U2 #H0 destruct
+  elim (frees_inv_flat … H1) -H1 #gV1 #gT0 #HgV1 #HgT0 #Hg1
+  elim (cpx_inv_flat1 … H0) -H0 *
+  [ #V2 #T2 #HV12 #HT12 #H destruct
+    lapply (sle_lexs_trans … H2 gV1 ?) /2 width=2 by sor_inv_sle_sn/ #HL12V
+    lapply (sle_lexs_trans … H2 gT0 ?) /2 width=2 by sor_inv_sle_dx/ -H2 #HL12T
+    elim (IH … HgV1 … HL12V … HV12) // -HgV1 -HL12V -HV12 #gV2 #HgV2 #HgV21
+    elim (IH … HgT0 … HL12T … HT12) // -IH -HgT0 -HL12T -HT12 #gT2 #HgT2 #HgT21
+    elim (sor_isfin_ex gV2 gT2) /2 width=3 by frees_fwd_isfin/
+    /3 width=10 by frees_flat, monotonic_sle_sor, ex2_intro/
+  | #HU2 #H destruct -HgV1
+    lapply (sle_lexs_trans … H2 gT0 ?) /2 width=2 by sor_inv_sle_dx/ -H2 #HL12T
+    elim (IH … HgT0 … HL12T … HU2) // -L1 -T0 -V1
+    /4 width=6 by sor_inv_sle_dx, sle_trans, ex2_intro/
+  | #HU2 #H destruct -HgT0
+    lapply (sle_lexs_trans … H2 gV1 ?) /2 width=2 by sor_inv_sle_sn/ -H2 #HL12V
+    elim (IH … HgV1 … HL12V … HU2) // -L1 -T0 -V1
+    /4 width=6 by sor_inv_sle_sn, sle_trans, ex2_intro/
+  | #p #V2 #W1 #W2 #T1 #T2 #HV12 #HW12 #HT12 #H0 #H1 #H destruct
+    elim (frees_inv_bind … HgT0) -HgT0 #gW1 #gT1 #HgW1 #HgT1 #HgT0
+    lapply (sle_lexs_trans … H2 gV1 ?) /2 width=2 by sor_inv_sle_sn/ #HL12V
+    lapply (sle_lexs_trans … H2 gT0 ?) /2 width=2 by sor_inv_sle_dx/ -H2 #H2
+    lapply (sle_lexs_trans … H2 gW1 ?) /2 width=2 by sor_inv_sle_sn/ #HL12W
+    lapply (sle_lexs_trans … H2 (⫱gT1) ?) /2 width=2 by sor_inv_sle_dx/ -H2 #HL12T
+    lapply (lexs_inv_tl … Abst … HL12T … HW12 ?) // -HL12T #HL12T
+    elim (sor_isfin_ex gV1 gW1) /2 width=3 by frees_fwd_isfin/ #g0 #Hg0 #_
+    lapply (sor_trans2 … Hg1 … HgT0 … Hg0) -Hg1 -HgT0 #Hg1
+    lapply (sor_sym … Hg0) -Hg0 #Hg0
+    elim (IH … HgV1 … HL12V … HV12) // -HgV1 -HL12V -HV12 #gV2 #HgV2 #HgV21
+    elim (IH … HgW1 … HL12W … HW12) // -HgW1 -HL12W -HW12 #gW2 #HgW2 #HgW21
+    elim (IH … HgT1 … HL12T … HT12) // -IH -HgT1 -HL12T -HT12 #gT2 #HgT2 #HgT21
+    elim (sor_isfin_ex gV2 (⫱gT2)) /3 width=3 by frees_fwd_isfin, isfin_tl/ #gVT2 #HgVT2 #_
+    elim (lsubf_frees_trans … HgT2 (⫯gVT2) … (L2.ⓓⓝW2.V2))
+    [2: /4 width=4 by lsubf_refl, lsubf_beta, sor_inv_sle_dx, sor_inv_sle_sn, sle_inv_tl_sn/ ]
+    -HgT2 #gT0 #HgT0 #HgT20
+    elim (sor_isfin_ex gW2 gV2) /2 width=3 by frees_fwd_isfin/ #gV0 #HgV0 #H
+    elim (sor_isfin_ex gV0 (⫱gT0)) /3 width=3 by frees_fwd_isfin, isfin_tl/ -H #g2 #Hg2 #_
+    @(ex2_intro … g2)
+    [ @(frees_bind … Hg2) /2 width=5 by frees_flat/
+    | -L2 @(sor_inv_sle … Hg2) -Hg2
+      [ /3 width=11 by sor_inv_sle_sn_trans, monotonic_sle_sor/
+      | @sle_xn_tl [2:|*: // ] @(sle_trans … HgT20) -HgT20
+        /4 width=8 by monotonic_sle_sor, sor_inv_sle_dx_trans, sle_tl, sle_next/
+      ] (**) (* full auto too slow *)
     ]
+  | #p #V2 #V #W1 #W2 #T1 #T2 #HV12 #HV2 #HW12 #HT12 #H0 #H1 #H destruct
+    elim (frees_inv_bind … HgT0) -HgT0 #gW1 #gT1 #HgW1 #HgT1 #HgT0
+    lapply (sle_lexs_trans … H2 gV1 ?) /2 width=2 by sor_inv_sle_sn/ #HL12V
+    lapply (sle_lexs_trans … H2 gT0 ?) /2 width=2 by sor_inv_sle_dx/ -H2 #H2
+    lapply (sle_lexs_trans … H2 gW1 ?) /2 width=2 by sor_inv_sle_sn/ #HL12W
+    lapply (sle_lexs_trans … H2 (⫱gT1) ?) /2 width=2 by sor_inv_sle_dx/ -H2 #HL12T
+    lapply (lexs_inv_tl … Abbr … HL12T … HW12 ?) // -HL12T #HL12T
+    elim (sor_isfin_ex gV1 gW1) /2 width=3 by frees_fwd_isfin/ #g0 #Hg0 #_
+    lapply (sor_trans2 … Hg1 … HgT0 … Hg0) -Hg1 -HgT0 #Hg1
+    elim (IH … HgV1 … HL12V … HV12) // -HgV1 -HL12V -HV12 #gV2 #HgV2 #HgV21
+    elim (IH … HgW1 … HL12W … HW12) // -HgW1 -HL12W -HW12 #gW2 #HgW2 #HgW21
+    elim (IH … HgT1 … HL12T … HT12) // -IH -HgT1 -HL12T -HT12 #gT2 #HgT2 #HgT21
+    elim (sor_isfin_ex (↑gV2) gT2) /3 width=3 by frees_fwd_isfin, isfin_push/ #gV0 #HgV0 #H
+    elim (sor_isfin_ex gW2 (⫱gV0)) /3 width=3 by frees_fwd_isfin, isfin_tl/ -H #g2 #Hg2 #_
+    elim (sor_isfin_ex gW2 gV2) /2 width=3 by frees_fwd_isfin/ #g #Hg #_
+    lapply (sor_trans2 … Hg2 … (⫱gT2) … Hg) /2 width=1 by sor_tl/ #Hg2
+    lapply (frees_lifts (Ⓣ) … HgV2 … (L2.ⓓW2) … HV2 ??)
+    [4: lapply (sor_sym … Hg) |*: /3 width=3 by drops_refl, drops_drop/ ] -V2 (**) (* full auto too slow *)
+    /4 width=10 by frees_flat, frees_bind, monotonic_sle_sor, sle_tl, ex2_intro/
   ]
 ]
 qed-.
 
-lemma cpx_frees_trans: ∀h,o,G. frees_trans (cpx h o G).
-/2 width=8 by lpx_cpx_frees_trans/ qed-.
+(* Basic_2A1: was: cpx_frees_trans *)
+lemma cpx_frees_conf: ∀h,G. R_frees_confluent (cpx h G).
+/3 width=7 by cpx_frees_conf_lfpx, lexs_refl/ qed-.
 
-lemma lpx_frees_trans: ∀h,o,G,L1,L2. ⦃G, L1⦄ ⊢ ➡[h, o] L2 →
-                       ∀U,i. L2 ⊢ i ϵ 𝐅*[0]⦃U⦄ → L1 ⊢ i ϵ 𝐅*[0]⦃U⦄.
-/2 width=8 by lpx_cpx_frees_trans/ qed-.
+(* Basic_2A1: was: lpx_frees_trans *)
+lemma lfpx_frees_conf: ∀h,G. lexs_frees_confluent (cpx h G) cfull.
+/2 width=7 by cpx_frees_conf_lfpx/ qed-.