- basic_2: induction for preservation results now uses supclosure

[helm.git] / matita / matita / contribs / lambdadelta / basic_2 / dynamic / ypr.ma

diff --git a/matita/matita/contribs/lambdadelta/basic_2/dynamic/ypr.ma b/matita/matita/contribs/lambdadelta/basic_2/dynamic/ypr.ma
index b1c75077e5826d678b64ad604feefd16f67fb6c9..0167f4cd3adb7c135a46d2d82bced891abb668cd 100644 (file)
--- a/matita/matita/contribs/lambdadelta/basic_2/dynamic/ypr.ma
+++ b/matita/matita/contribs/lambdadelta/basic_2/dynamic/ypr.ma
@@ -12,13 +12,14 @@
 (*                                                                        *)
 (**************************************************************************)
 
+include "basic_2/relocation/fsup.ma".
 include "basic_2/reduction/lpr.ma".
 include "basic_2/dynamic/lsubsv.ma".
 
 (* "BIG TREE" PARALLEL REDUCTION FOR CLOSURES *******************************)
 
 inductive ypr (h) (g) (L1) (T1): relation2 lenv term ≝
-| ypr_fw    : ∀L2,T2. ♯{L2, T2} < ♯{L1, T1} → ypr h g L1 T1 L2 T2
+| ypr_fsup  : ∀L2,T2. ⦃L1, T1⦄ ⊃ ⦃L2, T2⦄ → ypr h g L1 T1 L2 T2
 | ypr_lpr   : ∀L2. L1 ⊢ ➡ L2 → ypr h g L1 T1 L2 T1
 | ypr_cpr   : ∀T2. L1 ⊢ T1 ➡ T2 → ypr h g L1 T1 L1 T2
 | ypr_ssta  : ∀T2,l. ⦃h, L1⦄ ⊢ T1 •[g] ⦃l+1, T2⦄ → ypr h g L1 T1 L1 T2