update in ground

[helm.git] / matita / matita / contribs / lambdadelta / ground / lib / stream_tls_eq.ma

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 ee230d2b6d3429c0aa29cbe88ff70644406a8f73..a56c432fc52a14732ddf7d9c018c7011ee38b2fe 100644 (file)
--- a/matita/matita/contribs/lambdadelta/ground/lib/stream_tls_eq.ma
+++ b/matita/matita/contribs/lambdadelta/ground/lib/stream_tls_eq.ma
@@ -12,16 +12,15 @@
 (*                                                                        *)
 (**************************************************************************)
 
-include "ground/lib/stream_eq.ma".
 include "ground/lib/stream_tls.ma".
+include "ground/lib/stream_hdtl_eq.ma".
 
 (* ITERATED TAIL FOR STREAMS ************************************************)
 
-(* Properties with stream_eq *)
+(* Constructions with stream_eq *********************************************)
 
 lemma stream_tls_eq_repl (A) (n):
-      stream_eq_repl A (λt1,t2. â«°*[n] t1 â\89\97 â«°*[n] t2).
+      stream_eq_repl A (λt1,t2. â\87\82*[n] t1 â\89\97 â\87\82*[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.