- first properties of strongly normalizing terms

[helm.git] / matita / matita / contribs / lambda_delta / Basic_2 / computation / acp.ma

diff --git a/matita/matita/contribs/lambda_delta/Basic_2/computation/acp.ma b/matita/matita/contribs/lambda_delta/Basic_2/computation/acp.ma
index ca1ba468640db0e0577b3165d9f82bc1aee367b3..8be75a31f23398cb8a22ca3db4b82f708ad66199 100644 (file)
--- a/matita/matita/contribs/lambda_delta/Basic_2/computation/acp.ma
+++ b/matita/matita/contribs/lambda_delta/Basic_2/computation/acp.ma
@@ -27,7 +27,7 @@ definition CP3 ≝ λRR:lenv→relation term. λRP:lenv→predicate term.
 
 definition CP4 ≝ λRR:lenv→relation term. λRS:relation term.
                  ∀L0,L,T,T0,d,e. NF … (RR L) RS T → 
-                 ⇩[d,e] L0 ≡ L → ⇧[d, e] T ≡ T0 → NF … (RR L0) RS T0.
+                 ⇩[d, e] L0 ≡ L → ⇧[d, e] T ≡ T0 → NF … (RR L0) RS T0.
 
 definition CP4s ≝ λRR:lenv→relation term. λRS:relation term.
                   ∀L0,L,des. ⇩*[des] L0 ≡ L →
@@ -44,6 +44,7 @@ record acp (RR:lenv->relation term) (RS:relation term) (RP:lenv→predicate term
 
 (* Basic properties *********************************************************)
 
+(* Basic_1: was: nf2_lift1 *)
 lemma acp_lifts: ∀RR,RS. CP4 RR RS → CP4s RR RS.
 #RR #RS #HRR #L1 #L2 #des #H elim H -L1 -L2 -des
 [ #L #T1 #T2 #H #HT1