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 *)
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15 include "basic_2/static/lfxs_fqup.ma".
16 include "basic_2/static/lfdeq.ma".
18 (* DEGREE-BASED EQUIVALENCE FOR LOCAL ENVIRONMENTS ON REFERRED ENTRIES ******)
20 (* Advanced properties ******************************************************)
22 lemma lfdeq_refl: ∀h,o,T. reflexive … (lfdeq h o T).
23 /2 width=1 by lfxs_refl/ qed.
25 lemma lfdeq_pair: ∀h,o,V1,V2. V1 ≡[h, o] V2 →
26 ∀I,L. ∀T:term. L.ⓑ{I}V1 ≡[h, o, T] L.ⓑ{I}V2.
27 /2 width=1 by lfxs_pair/ qed.