+++ /dev/null
-(**************************************************************************)
-(* ___ *)
-(* ||M|| *)
-(* ||A|| A project by Andrea Asperti *)
-(* ||T|| *)
-(* ||I|| Developers: *)
-(* ||T|| The HELM team. *)
-(* ||A|| http://helm.cs.unibo.it *)
-(* \ / *)
-(* \ / This file is distributed under the terms of the *)
-(* v GNU General Public License Version 2 *)
-(* *)
-(**************************************************************************)
-
-include "basic_2/static/lfxs_fqup.ma".
-include "basic_2/static/lfdeq.ma".
-
-(* DEGREE-BASED EQUIVALENCE FOR LOCAL ENVIRONMENTS ON REFERRED ENTRIES ******)
-
-(* Advanced properties ******************************************************)
-
-lemma lfdeq_refl: ∀h,o,T. reflexive … (lfdeq h o T).
-/2 width=1 by lfxs_refl/ qed.
-
-lemma lfdeq_pair_refl: ∀h,o,V1,V2. V1 ≛[h, o] V2 →
- ∀I,L. ∀T:term. L.ⓑ{I}V1 ≛[h, o, T] L.ⓑ{I}V2.
-/2 width=1 by lfxs_pair_refl/ qed.
-
-(* Advanced inversion lemmas ************************************************)
-
-lemma lfdeq_inv_bind_void: ∀h,o,p,I,L1,L2,V,T. L1 ≛[h, o, ⓑ{p,I}V.T] L2 →
- L1 ≛[h, o, V] L2 ∧ L1.ⓧ ≛[h, o, T] L2.ⓧ.
-/2 width=3 by lfxs_inv_bind_void/ qed-.
-
-(* Advanced forward lemmas **************************************************)
-
-lemma lfdeq_fwd_bind_dx_void: ∀h,o,p,I,L1,L2,V,T.
- L1 ≛[h, o, ⓑ{p,I}V.T] L2 → L1.ⓧ ≛[h, o, T] L2.ⓧ.
-/2 width=4 by lfxs_fwd_bind_dx_void/ qed-.