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(*       ___                                                              *)
(*      ||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                  *)
(*                                                                        *)
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include "static_2/static/reqx_fqup.ma".
include "static_2/static/feqx.ma".

(* SORT-IRRELEVANT EQUIVALENCE FOR CLOSURES ON REFERRED ENTRIES *************)

(* Properties with sort-irrelevant equivalence for terms ********************)

lemma teqx_feqx: ∀T1,T2. T1 ≛ T2 →
                 ∀G,L. ❪G,L,T1❫ ≛ ❪G,L,T2❫.
/2 width=1 by feqx_intro_sn/ qed.

(* Advanced properties ******************************************************)

lemma feqx_refl: tri_reflexive … feqx.
/2 width=1 by feqx_intro_sn/ qed.