X-Git-Url: http://matita.cs.unibo.it/gitweb/?p=helm.git;a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flambdadelta%2Fstatic_2%2Fsyntax%2Flenv_length.ma;h=5f4b5dcb71cf718e4d4469c4912ce97ee2e00451;hp=768105e54ed2de654d7c085d8dbeaacf4c19f4f3;hb=98e786e1a6bd7b621e37ba7cd4098d4a0a6f8278;hpb=5d9f7ae4bad2b5926f615141c12942b9a8eb23fb

diff --git a/matita/matita/contribs/lambdadelta/static_2/syntax/lenv_length.ma b/matita/matita/contribs/lambdadelta/static_2/syntax/lenv_length.ma
index 768105e54..5f4b5dcb7 100644
--- a/matita/matita/contribs/lambdadelta/static_2/syntax/lenv_length.ma
+++ b/matita/matita/contribs/lambdadelta/static_2/syntax/lenv_length.ma
@@ -47,7 +47,7 @@ lemma length_inv_succ_dx: ∀n,L. |L| = ↑n →
                           ∃∃I,K. |K| = n & L = K. ⓘ[I].
 #n *
 [ >length_atom #H destruct
-| #L #I >length_bind /3 width=4 by ex2_2_intro, injective_S/
+| #L #I >length_bind /3 width=4 by ex2_2_intro, eq_inv_nsucc_bi/
 ]
 qed-.