X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flambdadelta%2Fbasic_2%2Freduction%2Fcnr_lift.ma;h=8d0267c474b17b44f66d182aab5946030902827a;hb=29973426e0227ee48368d1c24dc0c17bf2baef77;hp=5e3c2c419a10f5528c8cdb76baa2aece6ed5856a;hpb=f95f6cb21b86f3dad114b21f687aa5df36088064;p=helm.git

diff --git a/matita/matita/contribs/lambdadelta/basic_2/reduction/cnr_lift.ma b/matita/matita/contribs/lambdadelta/basic_2/reduction/cnr_lift.ma
index 5e3c2c419..8d0267c47 100644
--- a/matita/matita/contribs/lambdadelta/basic_2/reduction/cnr_lift.ma
+++ b/matita/matita/contribs/lambdadelta/basic_2/reduction/cnr_lift.ma
@@ -20,7 +20,7 @@ include "basic_2/reduction/cnr.ma".
 (* Advanced properties ******************************************************)
 
 (* Basic_1: was only: nf2_csort_lref *)
-lemma cnr_lref_atom: ∀L,i. ⇩[0, i] L ≡ ⋆ → L ⊢ 𝐍⦃#i⦄.
+lemma cnr_lref_atom: ∀L,i. ⇩[0, i] L ≡ ⋆ → ⦃G, L⦄ ⊢ 𝐍⦃#i⦄.
 #L #i #HL #X #H
 elim (cpr_inv_lref1 … H) -H // *
 #K #V1 #V2 #HLK #_ #_
@@ -28,7 +28,7 @@ lapply (ldrop_mono … HL … HLK) -L #H destruct
 qed.
 
 (* Basic_1: was: nf2_lref_abst *)
-lemma cnr_lref_abst: ∀L,K,V,i. ⇩[0, i] L ≡ K. ⓛV → L ⊢ 𝐍⦃#i⦄.
+lemma cnr_lref_abst: ∀L,K,V,i. ⇩[0, i] L ≡ K. ⓛV → ⦃G, L⦄ ⊢ 𝐍⦃#i⦄.
 #L #K #V #i #HLK #X #H
 elim (cpr_inv_lref1 … H) -H // *
 #K0 #V1 #V2 #HLK0 #_ #_
@@ -39,7 +39,7 @@ qed.
 
 (* Basic_1: was: nf2_lift *)
 lemma cnr_lift: ∀L0,L,T,T0,d,e.
-                L ⊢ 𝐍⦃T⦄ → ⇩[d, e] L0 ≡ L → ⇧[d, e] T ≡ T0 → L0 ⊢ 𝐍⦃T0⦄.
+                ⦃G, L⦄ ⊢ 𝐍⦃T⦄ → ⇩[d, e] L0 ≡ L → ⇧[d, e] T ≡ T0 → L0 ⊢ 𝐍⦃T0⦄.
 #L0 #L #T #T0 #d #e #HLT #HL0 #HT0 #X #H
 elim (cpr_inv_lift1 … H … HL0 … HT0) -L0 #T1 #HT10 #HT1
 <(HLT … HT1) in HT0; -L #HT0
@@ -48,7 +48,7 @@ qed.
 
 (* Note: this was missing in basic_1 *)
 lemma cnr_inv_lift: ∀L0,L,T,T0,d,e.
-                    L0 ⊢ 𝐍⦃T0⦄ → ⇩[d, e] L0 ≡ L → ⇧[d, e] T ≡ T0 → L ⊢ 𝐍⦃T⦄.
+                    L0 ⊢ 𝐍⦃T0⦄ → ⇩[d, e] L0 ≡ L → ⇧[d, e] T ≡ T0 → ⦃G, L⦄ ⊢ 𝐍⦃T⦄.
 #L0 #L #T #T0 #d #e #HLT0 #HL0 #HT0 #X #H
 elim (lift_total X d e) #X0 #HX0
 lapply (cpr_lift … H … HL0 … HT0 … HX0) -L #HTX0