X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flambdadelta%2Fground%2Flib%2Fstream_tls_eq.ma;h=a56c432fc52a14732ddf7d9c018c7011ee38b2fe;hb=e5788b40c4a910069d1514b42c384f0e8b57050a;hp=28ae10cf0859075a124b2ae558dbb5665e2a4a81;hpb=01b17de504f0049c15eadcdad651a19adaa954f7;p=helm.git

diff --git a/matita/matita/contribs/lambdadelta/ground/lib/stream_tls_eq.ma b/matita/matita/contribs/lambdadelta/ground/lib/stream_tls_eq.ma
index 28ae10cf0..a56c432fc 100644
--- a/matita/matita/contribs/lambdadelta/ground/lib/stream_tls_eq.ma
+++ b/matita/matita/contribs/lambdadelta/ground/lib/stream_tls_eq.ma
@@ -12,8 +12,8 @@
 (*                                                                        *)
 (**************************************************************************)
 
-include "ground/lib/stream_eq.ma".
 include "ground/lib/stream_tls.ma".
+include "ground/lib/stream_hdtl_eq.ma".
 
 (* ITERATED TAIL FOR STREAMS ************************************************)
 
@@ -22,6 +22,5 @@ include "ground/lib/stream_tls.ma".
 lemma stream_tls_eq_repl (A) (n):
       stream_eq_repl A (λt1,t2. ⇂*[n] t1 ≗ ⇂*[n] t2).
 #A #n @(nat_ind_succ … n) -n //
-#n #IH * #n1 #t1 * #n2 #t2 #H
-elim (stream_eq_inv_cons_bi … H) /2 width=7 by/
+#n #IH /3 width=1 by stream_tl_eq_repl/
 qed.