X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flambdadelta%2Fbasic_2%2Fcomputation%2Fcprs_lift.ma;h=ca1556a8e7f36c5afb496f9d258e180d0affba39;hb=62211b3b2d76ba387663c9e553fbe4d2dbd92c82;hp=6298274bc74a5d7813dc0030af5f7df5dd236a70;hpb=2ba2dc23443ad764adab652e06d6f5ed10bd912d;p=helm.git

diff --git a/matita/matita/contribs/lambdadelta/basic_2/computation/cprs_lift.ma b/matita/matita/contribs/lambdadelta/basic_2/computation/cprs_lift.ma
index 6298274bc..ca1556a8e 100644
--- a/matita/matita/contribs/lambdadelta/basic_2/computation/cprs_lift.ma
+++ b/matita/matita/contribs/lambdadelta/basic_2/computation/cprs_lift.ma
@@ -21,12 +21,12 @@ include "basic_2/computation/cprs.ma".
 
 (* Note: apparently this was missing in basic_1 *)
 lemma cprs_delta: ∀G,L,K,V,V2,i.
-                  ⇩[0, i] L ≡ K.ⓓV → ⦃G, K⦄ ⊢ V ➡* V2 →
+                  ⇩[i] L ≡ K.ⓓV → ⦃G, K⦄ ⊢ V ➡* V2 →
                   ∀W2. ⇧[0, i + 1] V2 ≡ W2 → ⦃G, L⦄ ⊢ #i ➡* W2.
-#G #L #K #V #V2 #i #HLK #H elim H -V2 [ /3 width=6/ ]
+#G #L #K #V #V2 #i #HLK #H elim H -V2 [ /3 width=6 by cpr_cprs, cpr_delta/ ]
 #V1 #V2 #_ #HV12 #IHV1 #W2 #HVW2
 lapply (ldrop_fwd_drop2 … HLK) -HLK #HLK
-elim (lift_total V1 0 (i+1)) /4 width=11 by cpr_lift, cprs_strap1/
+elim (lift_total V1 0 (i+1)) /4 width=12 by cpr_lift, cprs_strap1/
 qed.
 
 (* Advanced inversion lemmas ************************************************)
@@ -34,16 +34,17 @@ qed.
 (* Basic_1: was: pr3_gen_lref *)
 lemma cprs_inv_lref1: ∀G,L,T2,i. ⦃G, L⦄ ⊢ #i ➡* T2 →
                       T2 = #i ∨
-                      ∃∃K,V1,T1. ⇩[0, i] L ≡ K. ⓓV1 & ⦃G, K⦄ ⊢ V1 ➡* T1 &
+                      ∃∃K,V1,T1. ⇩[i] L ≡ K.ⓓV1 & ⦃G, K⦄ ⊢ V1 ➡* T1 &
                                  ⇧[0, i + 1] T1 ≡ T2.
-#G #L #T2 #i #H @(cprs_ind … H) -T2 /2 width=1/
+#G #L #T2 #i #H @(cprs_ind … H) -T2 /2 width=1 by or_introl/
 #T #T2 #_ #HT2 *
 [ #H destruct
-  elim (cpr_inv_lref1 … HT2) -HT2 /2 width=1/
-  * /4 width=6/
+  elim (cpr_inv_lref1 … HT2) -HT2 /2 width=1 by or_introl/
+  * /4 width=6 by cpr_cprs, ex3_3_intro, or_intror/
 | * #K #V1 #T1 #HLK #HVT1 #HT1
   lapply (ldrop_fwd_drop2 … HLK) #H0LK
-  elim (cpr_inv_lift1 … HT2 … H0LK … HT1) -H0LK -T /4 width=6/
+  elim (cpr_inv_lift1 … HT2 … H0LK … HT1) -H0LK -T
+ /4 width=6 by cprs_strap1, ex3_3_intro, or_intror/
 ]
 qed-.
 
@@ -51,9 +52,9 @@ qed-.
 
 (* Basic_1: was: pr3_lift *)
 lemma cprs_lift: ∀G. l_liftable (cprs G).
-/3 width=9/ qed.
+/3 width=10 by l_liftable_LTC, cpr_lift/ qed.
 
 (* Basic_1: was: pr3_gen_lift *)
 lemma cprs_inv_lift1: ∀G. l_deliftable_sn (cprs G).
-/3 width=5 by l_deliftable_sn_LTC, cpr_inv_lift1/
+/3 width=6 by l_deliftable_sn_LTC, cpr_inv_lift1/
 qed-.