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 "basic_2/static/lfdeq_fqup.ma".
16 include "basic_2/static/ffdeq.ma".
18 (* DEGREE-BASED EQUIVALENCE FOR CLOSURES ON REFERRED ENTRIES ****************)
20 (* Properties with degree-based equivalence for terms ***********************)
22 lemma tdeq_ffdeq: ∀h,o,T1,T2. T1 ≛[h, o] T2 →
23 ∀G,L. ⦃G, L, T1⦄ ≛[h, o] ⦃G, L, T2⦄.
24 /2 width=1 by ffdeq_intro_sn/ qed.
26 (* Advanced properties ******************************************************)
28 lemma ffdeq_refl: ∀h,o. tri_reflexive … (ffdeq h o).
29 /2 width=1 by ffdeq_intro_sn/ qed.