update in basic_2

[helm.git] / matita / matita / contribs / lambdadelta / basic_2 / relocation / lexs_length.ma

diff --git a/matita/matita/contribs/lambdadelta/basic_2/relocation/lexs_length.ma b/matita/matita/contribs/lambdadelta/basic_2/relocation/lexs_length.ma
index faefb998920879a962a6f43b812e3edc3a039a81..71467ba72319444401782e16aa8ef9d32d1c7392 100644 (file)
--- a/matita/matita/contribs/lambdadelta/basic_2/relocation/lexs_length.ma
+++ b/matita/matita/contribs/lambdadelta/basic_2/relocation/lexs_length.ma
@@ -19,9 +19,8 @@ include "basic_2/relocation/lexs.ma".
 
 (* Forward lemmas with length for local environments ************************)
 
-(* Basic_2A1: uses: lpx_sn_fwd_length *)
 lemma lexs_fwd_length: ∀RN,RP,f,L1,L2. L1 ⪤*[RN, RP, f] L2 → |L1| = |L2|.
-#RM #RP #f #L1 #L2 #H elim H -f -L1 -L2 //
+#RN #RP #f #L1 #L2 #H elim H -f -L1 -L2 //
 #f #I1 #I2 #L1 #L2 >length_bind >length_bind //
 qed-.