1 (**************************************************************************)
4 (* ||A|| A project by Andrea Asperti *)
6 (* ||I|| Developers: *)
7 (* ||T|| The HELM team. *)
8 (* ||A|| http://helm.cs.unibo.it *)
10 (* \ / This file is distributed under the terms of the *)
11 (* v GNU General Public License Version 2 *)
13 (**************************************************************************)
15 include "ground/lib/stream_hdtl.ma".
16 include "ground/relocation/pstream.ma".
18 (* RELOCATION P-STREAM ******************************************************)
20 (* Properties with stream_tl *************************************************)
22 lemma tl_push: ∀f. f = ⫰⫯f.
25 lemma tl_next: ∀f. ⫰f = ⫰↑f.