advances in the theory of drops, lexs, and frees ...

[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 c3626ee27c0260e2d4c04b0e032ebd64998ad453..3f40c553c4b8e9940ad65cd954b544c3b0550c61 100644 (file)
--- a/matita/matita/contribs/lambdadelta/basic_2/relocation/lexs_length.ma
+++ b/matita/matita/contribs/lambdadelta/basic_2/relocation/lexs_length.ma
@@ -15,11 +15,11 @@
 include "basic_2/grammar/lenv_length.ma".
 include "basic_2/relocation/lexs.ma".
 
-(* GENERAL ENTRYWISE EXTENSION OF A CONTEXT-SENSITIVE REALTION FOR TERMS ****)
+(* GENERAL ENTRYWISE EXTENSION OF CONTEXT-SENSITIVE REALTIONS FOR TERMS *****)
 
 (* Forward lemmas on length for local environments **************************)
 
 (* Basic_2A1: includes: lpx_sn_fwd_length *)
-lemma lexs_fwd_length: ∀R,L1,L2,f. L1 ⦻*[R, f] L2 → |L1| = |L2|.
-#R #L1 #L2 #f #H elim H -L1 -L2 -f //
+lemma lexs_fwd_length: ∀RN,RP,L1,L2,f. L1 ⦻*[RN, RP, f] L2 → |L1| = |L2|.
+#RM #RP #L1 #L2 #f #H elim H -L1 -L2 -f //
 qed-.