]> matita.cs.unibo.it Git - helm.git/blob - matita/matita/contribs/lambdadelta/ground/relocation/pr_uni.ma
update in delayed_updating
[helm.git] / matita / matita / contribs / lambdadelta / ground / relocation / pr_uni.ma
1 (**************************************************************************)
2 (*       ___                                                              *)
3 (*      ||M||                                                             *)
4 (*      ||A||       A project by Andrea Asperti                           *)
5 (*      ||T||                                                             *)
6 (*      ||I||       Developers:                                           *)
7 (*      ||T||         The HELM team.                                      *)
8 (*      ||A||         http://helm.cs.unibo.it                             *)
9 (*      \   /                                                             *)
10 (*       \ /        This file is distributed under the terms of the       *)
11 (*        v         GNU General Public License Version 2                  *)
12 (*                                                                        *)
13 (**************************************************************************)
14
15 include "ground/notation/functions/element_u_1.ma".
16 include "ground/relocation/pr_nexts.ma".
17 include "ground/relocation/pr_id.ma".
18
19 (* UNIFORM ELEMENTS FOR PARTIAL RELOCATION MAPS *****************************)
20
21 (*** uni *)
22 definition pr_uni (n) ā‰ ā†‘*[n] š¢.
23
24 interpretation
25   "uniform elements (partial relocation maps)"
26   'ElementU n = (pr_uni n).
27
28 (* Basic constructions ******************************************************)
29
30 (*** uni_zero *)
31 lemma pr_uni_zero: š¢ = š®āØšŸŽā©.
32 // qed.
33
34 (*** uni_succ *)
35 lemma pr_uni_succ (n): ā†‘š®āØnā© = š®āØā†‘nā©.
36 /2 width=1 by pr_nexts_succ/ qed.