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/relocation/gr_nexts.ma".
16 include "ground/relocation/gr_isd.ma".
18 (* DIVERGENCE CONDITION FOR GENERIC RELOCATION MAPS *************************)
20 (* Constructions with gr_nexts **********************************************)
23 lemma gr_isd_nexts (n) (f): šāŖfā« ā šāŖā*[n]fā«.
24 #n @(nat_ind_succ ā¦ n) -n /3 width=3 by gr_isd_next/
27 (* Inversions with gr_nexts *************************************************)
29 (*** isdiv_inv_nexts *)
30 lemma gr_isd_inv_nexts (n) (g): šāŖā*[n]gā« ā šāŖgā«.
31 #n @(nat_ind_succ ā¦ n) -n /3 width=3 by gr_isd_inv_next/