X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flambdadelta%2Fstatic_2%2Fstatic%2Ffeqx.ma;h=e4c8a22d1cee836a0e71b6b7ccb0cc531030fc2d;hb=b118146b97959e6a6dde18fdd014b8e1e676a2d1;hp=a341e76880549692fe03d10c70943d3c83882c96;hpb=adb9ba187619cea977d1d22971eba27eb437cd6a;p=helm.git

diff --git a/matita/matita/contribs/lambdadelta/static_2/static/feqx.ma b/matita/matita/contribs/lambdadelta/static_2/static/feqx.ma
index a341e7688..e4c8a22d1 100644
--- a/matita/matita/contribs/lambdadelta/static_2/static/feqx.ma
+++ b/matita/matita/contribs/lambdadelta/static_2/static/feqx.ma
@@ -12,40 +12,41 @@
 (*                                                                        *)
 (**************************************************************************)
 
-include "static_2/notation/relations/stareqsn_6.ma".
-include "static_2/syntax/genv.ma".
-include "static_2/static/reqx.ma".
+include "static_2/notation/relations/approxeqsn_6.ma".
+include "static_2/syntax/teqx.ma".
+include "static_2/static/feqg.ma".
 
 (* SORT-IRRELEVANT EQUIVALENCE FOR CLOSURES ON REFERRED ENTRIES *************)
 
-inductive feqx (G) (L1) (T1): relation3 genv lenv term ≝
-| feqx_intro_sn: ∀L2,T2. L1 ≛[T1] L2 → T1 ≛ T2 →
-                 feqx G L1 T1 G L2 T2
-.
+definition feqx: relation6 genv lenv term genv lenv term ≝
+           feqg sfull.
 
 interpretation
-   "sort-irrelevant equivalence on referred entries (closure)"
-   'StarEqSn G1 L1 T1 G2 L2 T2 = (feqx G1 L1 T1 G2 L2 T2).
+  "sort-irrelevant equivalence on referred entries (closure)"
+  'ApproxEqSn G1 L1 T1 G2 L2 T2 = (feqx G1 L1 T1 G2 L2 T2).
 
 (* Basic_properties *********************************************************)
-
-lemma feqx_intro_dx (G): ∀L1,L2,T2. L1 ≛[T2] L2 →
-                         ∀T1. T1 ≛ T2 → ⦃G,L1,T1⦄ ≛ ⦃G,L2,T2⦄.
+(*
+lemma feqx_intro_dx (G):
+      ∀L1,L2,T2. L1 ≛[T2] L2 →
+      ∀T1. T1 ≛ T2 → ❪G,L1,T1❫ ≛ ❪G,L2,T2❫.
 /3 width=3 by feqx_intro_sn, teqx_reqx_div/ qed.
 
 (* Basic inversion lemmas ***************************************************)
 
-lemma feqx_inv_gen_sn: ∀G1,G2,L1,L2,T1,T2. ⦃G1,L1,T1⦄ ≛ ⦃G2,L2,T2⦄ →
-                       ∧∧ G1 = G2 & L1 ≛[T1] L2 & T1 ≛ T2.
+lemma feqx_inv_gen_sn:
+      ∀G1,G2,L1,L2,T1,T2. ❪G1,L1,T1❫ ≛ ❪G2,L2,T2❫ →
+      ∧∧ G1 = G2 & L1 ≛[T1] L2 & T1 ≛ T2.
 #G1 #G2 #L1 #L2 #T1 #T2 * -G2 -L2 -T2 /2 width=1 by and3_intro/
 qed-.
 
-lemma feqx_inv_gen_dx: ∀G1,G2,L1,L2,T1,T2. ⦃G1,L1,T1⦄ ≛ ⦃G2,L2,T2⦄ →
-                       ∧∧ G1 = G2 & L1 ≛[T2] L2 & T1 ≛ T2.
+lemma feqx_inv_gen_dx:
+      ∀G1,G2,L1,L2,T1,T2. ❪G1,L1,T1❫ ≛ ❪G2,L2,T2❫ →
+      ∧∧ G1 = G2 & L1 ≛[T2] L2 & T1 ≛ T2.
 #G1 #G2 #L1 #L2 #T1 #T2 * -G2 -L2 -T2
-/3 width=3 by teqx_reqx_conf, and3_intro/
+/3 width=3 by teqx_reqx_conf_sn, and3_intro/
 qed-.
-
+*)
 (* Basic_2A1: removed theorems 6:
               fleq_refl fleq_sym fleq_inv_gen
               fleq_trans fleq_canc_sn fleq_canc_dx