notational change of lift, drop, and gget

[helm.git] / matita / matita / contribs / lambdadelta / basic_2 / reduction / cnr.ma

diff --git a/matita/matita/contribs/lambdadelta/basic_2/reduction/cnr.ma b/matita/matita/contribs/lambdadelta/basic_2/reduction/cnr.ma
index d68be168026e618aa715a8ce8f09a25961ff8b26..c7064080846f8072912daaf70c694e7a6d5edad3 100644 (file)
--- a/matita/matita/contribs/lambdadelta/basic_2/reduction/cnr.ma
+++ b/matita/matita/contribs/lambdadelta/basic_2/reduction/cnr.ma
@@ -25,7 +25,7 @@ interpretation
 
 (* Basic inversion lemmas ***************************************************)
 
-lemma cnr_inv_delta: â\88\80G,L,K,V,i. â\87©[i] L ≡ K.ⓓV → ⦃G, L⦄ ⊢ ➡ 𝐍⦃#i⦄ → ⊥.
+lemma cnr_inv_delta: â\88\80G,L,K,V,i. â¬\87[i] L ≡ K.ⓓV → ⦃G, L⦄ ⊢ ➡ 𝐍⦃#i⦄ → ⊥.
 #G #L #K #V #i #HLK #H
 elim (lift_total V 0 (i+1)) #W #HVW
 lapply (H W ?) -H [ /3 width=6 by cpr_delta/ ] -HLK #H destruct
@@ -84,13 +84,13 @@ qed.
 
 lemma cnr_lref_free: ∀G,L,i. |L| ≤ i → ⦃G, L⦄ ⊢ ➡ 𝐍⦃#i⦄.
 #G #L #i #Hi #X #H elim (cpr_inv_lref1 … H) -H // *
-#K #V1 #V2 #HLK lapply (ldrop_fwd_length_lt2 … HLK) -HLK
+#K #V1 #V2 #HLK lapply (drop_fwd_length_lt2 … HLK) -HLK
 #H elim (lt_refl_false i) /2 width=3 by lt_to_le_to_lt/
 qed.
 
 (* Basic_1: was only: nf2_csort_lref *)
-lemma cnr_lref_atom: â\88\80G,L,i. â\87©[i] L ≡ ⋆ → ⦃G, L⦄ ⊢ ➡ 𝐍⦃#i⦄.
-#G #L #i #HL @cnr_lref_free >(ldrop_fwd_length … HL) -HL //
+lemma cnr_lref_atom: â\88\80G,L,i. â¬\87[i] L ≡ ⋆ → ⦃G, L⦄ ⊢ ➡ 𝐍⦃#i⦄.
+#G #L #i #HL @cnr_lref_free >(drop_fwd_length … HL) -HL //
 qed.
 
 (* Basic_1: was: nf2_abst *)