]> matita.cs.unibo.it Git - helm.git/blob - matita/matita/contribs/lambdadelta/static_2/syntax/teqx_ext.ma
update in delayed_updating
[helm.git] / matita / matita / contribs / lambdadelta / static_2 / syntax / teqx_ext.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 (*
16 include "static_2/notation/relations/approxeq_3.ma".
17 *)
18 include "static_2/syntax/teqg_ext.ma".
19 include "static_2/syntax/teqx.ma".
20
21 (* EXTENDED SORT-IRRELEVANT EQUIVALENCE *************************************)
22 (*
23 definition teqx_ext: relation bind ≝
24            teqg_ext sfull.
25
26 definition ceqx: relation3 lenv term term ≝
27            ceqg sfull.
28 *)
29 definition ceqx_ext: relation3 lenv bind bind ≝
30            ceqg_ext sfull.
31 (*
32 interpretation
33   "context-free sort-irrelevant equivalence (binder)"
34   'StarEq I1 I2 = (teqx_ext I1 I2).
35
36 interpretation
37   "context-dependent sort-irrelevant equivalence (term)"
38   'StarEq L T1 T2 = (cdeq L T1 T2).
39
40 interpretation
41   "context-dependent sort-irrelevant equivalence (binder)"
42   'ApproxEq L I1 I2 = (cdeq_ext L I1 I2).
43 *)