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 "delayed_updating/unwind/unwind2_prototerm.ma".
16 include "delayed_updating/unwind/unwind2_path_append.ma".
17 include "ground/lib/subset_overlap.ma".
19 (* TAILED UNWIND FOR PROTOTERM **********************************************)
21 (* Destructions with inner condition for path *******************************)
23 lemma unwind2_term_des_inner (f) (t):
25 #f #t * #p * #q #Hq #H0 #Hp destruct
26 @(subset_ol_i … Hq) -Hq (**) (* auto does not work *)
27 @(unwind2_path_des_inner … Hp)