X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flambdadelta%2Fbasic_2%2Fmultiple%2Flifts_lift.ma;h=990878bee5b0200938f21e6321a908b4156c241f;hb=c60524dec7ace912c416a90d6b926bee8553250b;hp=ae4801a5e08d1413e4fda89dee7e5c66969cad07;hpb=f10cfe417b6b8ec1c7ac85c6ecf5fb1b3fdf37db;p=helm.git

diff --git a/matita/matita/contribs/lambdadelta/basic_2/multiple/lifts_lift.ma b/matita/matita/contribs/lambdadelta/basic_2/multiple/lifts_lift.ma
index ae4801a5e..990878bee 100644
--- a/matita/matita/contribs/lambdadelta/basic_2/multiple/lifts_lift.ma
+++ b/matita/matita/contribs/lambdadelta/basic_2/multiple/lifts_lift.ma
@@ -25,7 +25,7 @@ lemma lifts_lift_trans_le: ∀T1,T,des. ⬆*[des] T1 ≡ T → ∀T2. ⬆[0, 1]
                            ∃∃T0. ⬆[0, 1] T1 ≡ T0 & ⬆*[des + 1] T0 ≡ T2.
 #T1 #T #des #H elim H -T1 -T -des
 [ /2 width=3/
-| #T1 #T3 #T #des #d #e #HT13 #_ #IHT13 #T2 #HT2
+| #T1 #T3 #T #des #l #m #HT13 #_ #IHT13 #T2 #HT2
   elim (IHT13 … HT2) -T #T #HT3 #HT2
   elim (lift_trans_le … HT13 … HT3) -T3 // /3 width=5/
 ]
@@ -43,17 +43,17 @@ lemma lifts_lift_trans: ∀des,i,i0. @⦃i, des⦄ ≡ i0 →
   lapply (minuss_inv_nil1 … H2) -H2 #H
   >(pluss_inv_nil2 … H) in HT10; -des0 #H
   >(lifts_inv_nil … H) -T1 /2 width=3/
-| #d #e #des #IHdes #i #i0 #H1 #des0 #H2 #T1 #T0 #HT10 #T2 #HT02
-  elim (at_inv_cons … H1) -H1 * #Hid #Hi0
-  [ elim (minuss_inv_cons1_lt … H2) -H2 [2: /2 width=1/ ] #des1 #Hdes1 <minus_le_minus_minus_comm // <minus_plus_m_m #H
+| #l #m #des #IHcs #i #i0 #H1 #des0 #H2 #T1 #T0 #HT10 #T2 #HT02
+  elim (at_inv_cons … H1) -H1 * #Hil #Hi0
+  [ elim (minuss_inv_cons1_lt … H2) -H2 [2: /2 width=1/ ] #des1 #Hcs1 <minus_le_minus_minus_comm // <minus_plus_m_m #H
     elim (pluss_inv_cons2 … H) -H #des2 #H1 #H2 destruct
     elim (lifts_inv_cons … HT10) -HT10 #T >minus_plus #HT1 #HT0
-    elim (IHdes … Hi0 … Hdes1 … HT0 … HT02) -IHdes -Hi0 -Hdes1 -T0 #T0 #HT0 #HT02
+    elim (IHcs … Hi0 … Hcs1 … HT0 … HT02) -IHcs -Hi0 -Hcs1 -T0 #T0 #HT0 #HT02
     elim (lift_trans_le … HT1 … HT0) -T /2 width=1/ #T #HT1 <plus_minus_m_m /2 width=1/ /3 width=5/
   | >commutative_plus in Hi0; #Hi0
-    lapply (minuss_inv_cons1_ge … H2 ?) -H2 [ /2 width=1/ ] <associative_plus #Hdes0
-    elim (IHdes … Hi0 … Hdes0 … HT10 … HT02) -IHdes -Hi0 -Hdes0 -T0 #T0 #HT0 #HT02
-    elim (lift_split … HT0 d (i+1)) -HT0 /2 width=1/ /3 width=5/
+    lapply (minuss_inv_cons1_ge … H2 ?) -H2 [ /2 width=1/ ] <associative_plus #Hcs0
+    elim (IHcs … Hi0 … Hcs0 … HT10 … HT02) -IHcs -Hi0 -Hcs0 -T0 #T0 #HT0 #HT02
+    elim (lift_split … HT0 l (i+1)) -HT0 /2 width=1/ /3 width=5/
   ]
 ]
 qed-.