X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flambdadelta%2Fbasic_2%2Fcomputation%2Ffsb_alt.ma;h=12df3c22c28b17f6f443a6181a40994c7b710920;hb=7a25b8fcba2436a75556db1725c6e1be78a9faca;hp=992775d70aac4e893ed96f0cf3243a1946212a96;hpb=6aab24b40d5d09561375959043ecd85c8b428d85;p=helm.git

diff --git a/matita/matita/contribs/lambdadelta/basic_2/computation/fsb_alt.ma b/matita/matita/contribs/lambdadelta/basic_2/computation/fsb_alt.ma
index 992775d70..12df3c22c 100644
--- a/matita/matita/contribs/lambdadelta/basic_2/computation/fsb_alt.ma
+++ b/matita/matita/contribs/lambdadelta/basic_2/computation/fsb_alt.ma
@@ -21,7 +21,7 @@ include "basic_2/computation/fsb.ma".
 (* Note: alternative definition of fsb *)
 inductive fsba (h) (g): relation3 genv lenv term ≝
 | fsba_intro: ∀G1,L1,T1. (
-                 ∀G2,L2,T2. ⦃G1, L1, T1⦄ >⋕[h, g] ⦃G2, L2, T2⦄ → fsba h g G2 L2 T2
+                 ∀G2,L2,T2. ⦃G1, L1, T1⦄ >≡[h, g] ⦃G2, L2, T2⦄ → fsba h g G2 L2 T2
               ) → fsba h g G1 L1 T1.
 
 interpretation
@@ -32,7 +32,7 @@ interpretation
 
 lemma fsba_ind_alt: ∀h,g. ∀R: relation3 …. (
                        ∀G1,L1,T1. ⦃G1, L1⦄ ⊢ ⦥⦥[h,g] T1 → (
-                          ∀G2,L2,T2. ⦃G1, L1, T1⦄ >⋕[h, g] ⦃G2, L2, T2⦄ → R G2 L2 T2
+                          ∀G2,L2,T2. ⦃G1, L1, T1⦄ >≡[h, g] ⦃G2, L2, T2⦄ → R G2 L2 T2
                        ) → R G1 L1 T1
                     ) →
                     ∀G,L,T. ⦃G, L⦄ ⊢ ⦥⦥[h, g] T → R G L T.
@@ -74,7 +74,7 @@ lemma fsb_fpbs_trans: ∀h,g,G1,L1,T1. ⦃G1, L1⦄ ⊢ ⦥[h, g] T1 →
 
 lemma fsb_ind_fpbg: ∀h,g. ∀R:relation3 genv lenv term.
                     (∀G1,L1,T1. ⦃G1, L1⦄ ⊢ ⦥[h, g] T1 →
-                                (∀G2,L2,T2. ⦃G1, L1, T1⦄ >⋕[h, g] ⦃G2, L2, T2⦄ → R G2 L2 T2) →
+                                (∀G2,L2,T2. ⦃G1, L1, T1⦄ >≡[h, g] ⦃G2, L2, T2⦄ → R G2 L2 T2) →
                                 R G1 L1 T1
                     ) →
                     ∀G1,L1,T1. ⦃G1, L1⦄ ⊢ ⦥[h, g] T1 → R G1 L1 T1.