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/unwind_gen.ma".
16 include "ground/relocation/tr_pap_eq.ma".
18 (* GENERIC UNWIND FOR PATH **************************************************)
20 (* Constructions with stream_eq *********************************************)
22 lemma unwind_gen_eq_repl (p):
23 stream_eq_repl … (λf1,f2. ◆[f1]p = ◆[f2]p).
24 #p @(path_ind_unwind … p) -p // [ #n |*: #p ] #IH #f1 #f2 #Hf
25 [ <unwind_gen_d_empty <unwind_gen_d_empty
26 <(tr_pap_eq_repl … Hf) -f2 -IH //
27 | <unwind_gen_L_sn <unwind_gen_L_sn
29 | <unwind_gen_A_sn <unwind_gen_A_sn
31 | <unwind_gen_S_sn <unwind_gen_S_sn