X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flambdadelta%2Fbasic_2%2Fstatic%2Flfxs_length.ma;fp=matita%2Fmatita%2Fcontribs%2Flambdadelta%2Fbasic_2%2Fstatic%2Flfxs_length.ma;h=3b8208e4a78c46dad67083b49c796bfd3647ca5f;hb=981599dd384b3424c60297ea3a64ab0af9788ea2;hp=386e2ba8894c304c95fad915a7045eae17d4135a;hpb=86badc0111c3626c4a547d09302acc7e6a179dea;p=helm.git

diff --git a/matita/matita/contribs/lambdadelta/basic_2/static/lfxs_length.ma b/matita/matita/contribs/lambdadelta/basic_2/static/lfxs_length.ma
index 386e2ba88..3b8208e4a 100644
--- a/matita/matita/contribs/lambdadelta/basic_2/static/lfxs_length.ma
+++ b/matita/matita/contribs/lambdadelta/basic_2/static/lfxs_length.ma
@@ -20,6 +20,6 @@ include "basic_2/static/lfxs.ma".
 (* Forward lemmas with length for local environments ************************)
 
 (* Basic_2A1: uses: llpx_sn_fwd_length *)
-lemma lfxs_fwd_length: ∀R,L1,L2,T. L1 ⦻*[R, T] L2 → |L1| = |L2|.
+lemma lfxs_fwd_length: ∀R,L1,L2,T. L1 ⪤*[R, T] L2 → |L1| = |L2|.
 #R #L1 #L2 #T * /2 width=4 by lexs_fwd_length/
 qed-.