X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flambdadelta%2Fbasic_2%2Fequivalence%2Fscpes_scpes.ma;h=24ea20ec0e13475a71a6cd75d75bb274dbf135a7;hb=e62715437a9c39244c9809c00585a5ef44a39797;hp=e51027994ece725c0e3b1cc7869047d0eba0952c;hpb=c60524dec7ace912c416a90d6b926bee8553250b;p=helm.git

diff --git a/matita/matita/contribs/lambdadelta/basic_2/equivalence/scpes_scpes.ma b/matita/matita/contribs/lambdadelta/basic_2/equivalence/scpes_scpes.ma
index e51027994..24ea20ec0 100644
--- a/matita/matita/contribs/lambdadelta/basic_2/equivalence/scpes_scpes.ma
+++ b/matita/matita/contribs/lambdadelta/basic_2/equivalence/scpes_scpes.ma
@@ -19,51 +19,51 @@ include "basic_2/equivalence/scpes.ma".
 
 (* Advanced inversion lemmas ************************************************)
 
-lemma scpes_inv_abst2: ∀h,g,a,G,L,T1,T2,W2,d1,d2. ⦃G, L⦄ ⊢ T1 •*⬌*[h, g, d1, d2] ⓛ{a}W2.T2 →
-                       ∃∃W,T. ⦃G, L⦄ ⊢ T1 •*➡*[h, g, d1] ⓛ{a}W.T & ⦃G, L⦄ ⊢ W2 ➡* W & 
-                              ⦃G, L.ⓛW2⦄ ⊢ T2 •*➡*[h, g, d2] T.
-#h #g #a #G #L #T1 #T2 #W2 #d1 #d2 * #T0 #HT10 #H
+lemma scpes_inv_abst2: ∀h,o,a,G,L,T1,T2,W2,d1,d2. ⦃G, L⦄ ⊢ T1 •*⬌*[h, o, d1, d2] ⓛ{a}W2.T2 →
+                       ∃∃W,T. ⦃G, L⦄ ⊢ T1 •*➡*[h, o, d1] ⓛ{a}W.T & ⦃G, L⦄ ⊢ W2 ➡* W & 
+                              ⦃G, L.ⓛW2⦄ ⊢ T2 •*➡*[h, o, d2] T.
+#h #o #a #G #L #T1 #T2 #W2 #d1 #d2 * #T0 #HT10 #H
 elim (scpds_inv_abst1 … H) -H #W #T #HW2 #HT2 #H destruct /2 width=5 by ex3_2_intro/
 qed-.
 
 (* Advanced properties ******************************************************)
 
-lemma scpes_refl: ∀h,g,G,L,T,d1,d2. d2 ≤ d1 → ⦃G, L⦄ ⊢ T ▪[h, g] d1 →
-                  ⦃G, L⦄ ⊢ T •*⬌*[h, g, d2, d2] T.
-#h #g #G #L #T #d1 #d2 #Hd21 #Hd1
+lemma scpes_refl: ∀h,o,G,L,T,d1,d2. d2 ≤ d1 → ⦃G, L⦄ ⊢ T ▪[h, o] d1 →
+                  ⦃G, L⦄ ⊢ T •*⬌*[h, o, d2, d2] T.
+#h #o #G #L #T #d1 #d2 #Hd21 #Hd1
 elim (da_lstas … Hd1 … d2) #U #HTU #_
 /3 width=3 by scpds_div, lstas_scpds/
 qed.
 
-lemma lstas_scpes_trans: ∀h,g,G,L,T1,d0,d1. ⦃G, L⦄ ⊢ T1 ▪[h, g] d0 → d1 ≤ d0 →
+lemma lstas_scpes_trans: ∀h,o,G,L,T1,d0,d1. ⦃G, L⦄ ⊢ T1 ▪[h, o] d0 → d1 ≤ d0 →
                          ∀T. ⦃G, L⦄ ⊢ T1 •*[h, d1] T →
-                         ∀T2,d,d2. ⦃G, L⦄ ⊢ T •*⬌*[h,g,d,d2] T2 → ⦃G, L⦄ ⊢ T1 •*⬌*[h,g,d1+d,d2] T2.
-#h #g #G #L #T1 #d0 #d1 #Hd0 #Hd10 #T #HT1 #T2 #d #d2 *
+                         ∀T2,d,d2. ⦃G, L⦄ ⊢ T •*⬌*[h,o,d,d2] T2 → ⦃G, L⦄ ⊢ T1 •*⬌*[h,o,d1+d,d2] T2.
+#h #o #G #L #T1 #d0 #d1 #Hd0 #Hd10 #T #HT1 #T2 #d #d2 *
 /3 width=3 by scpds_div, lstas_scpds_trans/ qed-.
 
 (* Properties on parallel computation for terms *****************************)
 
-lemma cprs_scpds_div: ∀h,g,G,L,T1,T. ⦃G, L⦄ ⊢ T1 ➡* T →
-                      ∀d. ⦃G, L⦄ ⊢ T1 ▪[h, g] d →
-                      ∀T2,d2. ⦃G, L⦄ ⊢ T2 •*➡*[h, g, d2] T →
-                      ⦃G, L⦄⊢ T1 •*⬌*[h, g, 0, d2] T2.
-#h #g #G #L #T1 #T #HT1 #d #Hd elim (da_lstas … Hd 0)
+lemma cprs_scpds_div: ∀h,o,G,L,T1,T. ⦃G, L⦄ ⊢ T1 ➡* T →
+                      ∀d. ⦃G, L⦄ ⊢ T1 ▪[h, o] d →
+                      ∀T2,d2. ⦃G, L⦄ ⊢ T2 •*➡*[h, o, d2] T →
+                      ⦃G, L⦄⊢ T1 •*⬌*[h, o, 0, d2] T2.
+#h #o #G #L #T1 #T #HT1 #d #Hd elim (da_lstas … Hd 0)
 #X1 #HTX1 #_ elim (cprs_strip … HT1 X1) -HT1
 /3 width=5 by scpds_strap1, scpds_div, lstas_cpr, ex4_2_intro/
 qed.
 
 (* Main properties **********************************************************)
 
-theorem scpes_trans: ∀h,g,G,L,T1,T,d1,d. ⦃G, L⦄ ⊢ T1 •*⬌*[h, g, d1, d] T →
-                     ∀T2,d2. ⦃G, L⦄ ⊢ T •*⬌*[h, g, d, d2] T2 → ⦃G, L⦄ ⊢ T1 •*⬌*[h, g, d1, d2] T2.
-#h #g #G #L #T1 #T #d1 #d * #X1 #HT1X1 #HTX1 #T2 #d2 * #X2 #HTX2 #HT2X2
+theorem scpes_trans: ∀h,o,G,L,T1,T,d1,d. ⦃G, L⦄ ⊢ T1 •*⬌*[h, o, d1, d] T →
+                     ∀T2,d2. ⦃G, L⦄ ⊢ T •*⬌*[h, o, d, d2] T2 → ⦃G, L⦄ ⊢ T1 •*⬌*[h, o, d1, d2] T2.
+#h #o #G #L #T1 #T #d1 #d * #X1 #HT1X1 #HTX1 #T2 #d2 * #X2 #HTX2 #HT2X2
 elim (scpds_conf_eq … HTX1 … HTX2) -T -d /3 width=5 by scpds_cprs_trans, scpds_div/
 qed-.
 
-theorem scpes_canc_sn: ∀h,g,G,L,T,T1,d,d1. ⦃G, L⦄ ⊢ T •*⬌*[h, g, d, d1] T1 →
-                       ∀T2,d2. ⦃G, L⦄ ⊢ T •*⬌*[h, g, d, d2] T2 → ⦃G, L⦄ ⊢ T1 •*⬌*[h, g, d1, d2] T2.
+theorem scpes_canc_sn: ∀h,o,G,L,T,T1,d,d1. ⦃G, L⦄ ⊢ T •*⬌*[h, o, d, d1] T1 →
+                       ∀T2,d2. ⦃G, L⦄ ⊢ T •*⬌*[h, o, d, d2] T2 → ⦃G, L⦄ ⊢ T1 •*⬌*[h, o, d1, d2] T2.
 /3 width=4 by scpes_trans, scpes_sym/ qed-.
 
-theorem scpes_canc_dx: ∀h,g,G,L,T1,T,d1,d. ⦃G, L⦄ ⊢ T1 •*⬌*[h, g, d1, d] T →
-                       ∀T2,d2. ⦃G, L⦄ ⊢ T2 •*⬌*[h, g, d2, d] T → ⦃G, L⦄ ⊢ T1 •*⬌*[h, g, d1, d2] T2.
+theorem scpes_canc_dx: ∀h,o,G,L,T1,T,d1,d. ⦃G, L⦄ ⊢ T1 •*⬌*[h, o, d1, d] T →
+                       ∀T2,d2. ⦃G, L⦄ ⊢ T2 •*⬌*[h, o, d2, d] T → ⦃G, L⦄ ⊢ T1 •*⬌*[h, o, d1, d2] T2.
 /3 width=4 by scpes_trans, scpes_sym/ qed-.