notational update in lambdadelta completed

[helm.git] / matita / matita / contribs / lambdadelta / ground_2 / lib / streams_tls.ma

diff --git a/matita/matita/contribs/lambdadelta/ground_2/lib/streams_tls.ma b/matita/matita/contribs/lambdadelta/ground_2/lib/streams_tls.ma
index d2d6bcc30d690c92da266b5df8b9e907d395ad89..f2a910aa0c0295c6f2b7e34eadd586a8119cc07f 100644 (file)
--- a/matita/matita/contribs/lambdadelta/ground_2/lib/streams_tls.ma
+++ b/matita/matita/contribs/lambdadelta/ground_2/lib/streams_tls.ma
@@ -12,7 +12,7 @@
 (*                                                                        *)
 (**************************************************************************)
 
-include "ground_2/notation/functions/drops_2.ma".
+include "ground_2/notation/functions/downspoonstar_3.ma".
 include "ground_2/lib/streams_hdtl.ma".
 
 (* STREAMS ******************************************************************)
@@ -21,21 +21,21 @@ rec definition tls (A:Type[0]) (n:nat) on n: stream A → stream A ≝ ?.
 cases n -n [ #t @t | #n #t @tl @(tls … n t) ]
 defined.
 
-interpretation "recursive tail (strams)" 'Drops n f = (tls ? n f).
+interpretation "iterated tail (strams)" 'DownSpoonStar A n f = (tls A n f).
 
 (* basic properties *********************************************************)
 
 lemma tls_rew_O (A) (t): t = tls A 0 t.
 // qed.
 
-lemma tls_rew_S (A) (n) (t): â\86\93â\86\93*[n]t = tls A (⫯n) t.
+lemma tls_rew_S (A) (n) (t): â«°â«°*[n]t = tls A (â\86\91n) t.
 // qed.
 
-lemma tls_S1 (A) (n) (t): â\86\93*[n]â\86\93t = tls A (⫯n) t.
+lemma tls_S1 (A) (n) (t): â«°*[n]â«°t = tls A (â\86\91n) t.
 #A #n elim n -n //
 qed.
 
-lemma tls_eq_repl (A) (n): eq_stream_repl A (λt1,t2. â\86\93*[n] t1 â\89\90 â\86\93*[n] t2).
+lemma tls_eq_repl (A) (n): eq_stream_repl A (λt1,t2. â«°*[n] t1 â\89\97 â«°*[n] t2).
 #A #n elim n -n //
 #n #IH * #n1 #t1 * #n2 #t2 #H elim (eq_stream_inv_seq … H) /2 width=7 by/
 qed.