X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flambdadelta%2Fbasic_2%2Fcomputation%2Ffpbu.ma;h=f78b302774e264bcd8b7ff461b7a0637ddc8e200;hb=f282b35b958c9602fb1f47e5677b5805a046ac76;hp=f966dff5c17051dd83a63407f7942567b6d59d8f;hpb=cb5ca7ea4e826e9331eabeaea44353caab00071e;p=helm.git

diff --git a/matita/matita/contribs/lambdadelta/basic_2/computation/fpbu.ma b/matita/matita/contribs/lambdadelta/basic_2/computation/fpbu.ma
index f966dff5c..f78b30277 100644
--- a/matita/matita/contribs/lambdadelta/basic_2/computation/fpbu.ma
+++ b/matita/matita/contribs/lambdadelta/basic_2/computation/fpbu.ma
@@ -18,7 +18,7 @@ include "basic_2/computation/fpbs.ma".
 (* UNITARY "BIG TREE" PROPER PARALLEL COMPUTATION FOR CLOSURES **************)
 
 inductive fpbu (h) (g) (G1) (L1) (T1): relation3 genv lenv term ≝
-| fpbu_fqup: ∀G2,L2,T2. ⦃G1, L1, T1⦄ ⊃+ ⦃G2, L2, T2⦄ → fpbu h g G1 L1 T1 G2 L2 T2
+| fpbu_fqup: ∀G2,L2,T2. ⦃G1, L1, T1⦄ ⊐+ ⦃G2, L2, T2⦄ → fpbu h g G1 L1 T1 G2 L2 T2
 | fpbu_cpxs: ∀T2. ⦃G1, L1⦄ ⊢ T1 ➡*[h, g] T2 → (T1 = T2 → ⊥) → fpbu h g G1 L1 T1 G1 L1 T2
 | fpbu_lpxs: ∀L2. ⦃G1, L1⦄ ⊢ ➡*[h, g] L2 → (L1 ⋕[T1, 0] L2 → ⊥) → fpbu h g G1 L1 T1 G1 L2 T1
 .