update in basic_2 + web page

[helm.git] / matita / matita / contribs / lambdadelta / basic_2 / i_static / tc_lfxs_drops.ma

diff --git a/matita/matita/contribs/lambdadelta/basic_2/i_static/tc_lfxs_drops.ma b/matita/matita/contribs/lambdadelta/basic_2/i_static/tc_lfxs_drops.ma
index 64bb1f3f1716033206993a70091c515467fe3a87..2122b053332e4571e8de261620f14022b13c86af 100644 (file)
--- a/matita/matita/contribs/lambdadelta/basic_2/i_static/tc_lfxs_drops.ma
+++ b/matita/matita/contribs/lambdadelta/basic_2/i_static/tc_lfxs_drops.ma
@@ -20,18 +20,18 @@ include "basic_2/i_static/tc_lfxs.ma".
 
 definition tc_dedropable_sn: predicate (relation3 lenv term term) ≝
                              λR. ∀b,f,L1,K1. ⬇*[b, f] L1 ≡ K1 →
-                             â\88\80K2,T. K1 ⦻**[R, T] K2 → ∀U. ⬆*[f] T ≡ U →
-                             â\88\83â\88\83L2. L1 ⦻**[R, U] L2 & â¬\87*[b, f] L2 â\89¡ K2 & L1 â\89¡[f] L2.
+                             â\88\80K2,T. K1 ⪤**[R, T] K2 → ∀U. ⬆*[f] T ≡ U →
+                             â\88\83â\88\83L2. L1 ⪤**[R, U] L2 & â¬\87*[b, f] L2 â\89¡ K2 & L1 â\89\90[f] L2.
 
 definition tc_dropable_sn: predicate (relation3 lenv term term) ≝
                            λR. ∀b,f,L1,K1. ⬇*[b, f] L1 ≡ K1 → 𝐔⦃f⦄ →
-                           â\88\80L2,U. L1 ⦻**[R, U] L2 → ∀T. ⬆*[f] T ≡ U →
-                           â\88\83â\88\83K2. K1 ⦻**[R, T] K2 & ⬇*[b, f] L2 ≡ K2.
+                           â\88\80L2,U. L1 ⪤**[R, U] L2 → ∀T. ⬆*[f] T ≡ U →
+                           â\88\83â\88\83K2. K1 ⪤**[R, T] K2 & ⬇*[b, f] L2 ≡ K2.
 
 definition tc_dropable_dx: predicate (relation3 lenv term term) ≝
-                           λR. â\88\80L1,L2,U. L1 ⦻**[R, U] L2 →
+                           λR. â\88\80L1,L2,U. L1 ⪤**[R, U] L2 →
                            ∀b,f,K2. ⬇*[b, f] L2 ≡ K2 → 𝐔⦃f⦄ → ∀T. ⬆*[f] T ≡ U →
-                           â\88\83â\88\83K1. â¬\87*[b, f] L1 â\89¡ K1 & K1 ⦻**[R, T] K2.
+                           â\88\83â\88\83K1. â¬\87*[b, f] L1 â\89¡ K1 & K1 ⪤**[R, T] K2.
 
 (* Properties with generic slicing for local environments *******************)