X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flambdadelta%2Fdelayed_updating%2Freduction%2Fibfr.ma;h=974ceba5c8b6758c8a745c870c75625c85e59d50;hb=d108bcea8ebae11b03e8d8a155dfd3f2eb445127;hp=90b16d3de1941cf62d8bd2fcee61aa8133df92b0;hpb=4939d8280cb3467cd8fa648b1cea04f74d71e8b7;p=helm.git

diff --git a/matita/matita/contribs/lambdadelta/delayed_updating/reduction/ibfr.ma b/matita/matita/contribs/lambdadelta/delayed_updating/reduction/ibfr.ma
index 90b16d3de..974ceba5c 100644
--- a/matita/matita/contribs/lambdadelta/delayed_updating/reduction/ibfr.ma
+++ b/matita/matita/contribs/lambdadelta/delayed_updating/reduction/ibfr.ma
@@ -17,18 +17,18 @@ include "delayed_updating/substitution/lift_prototerm.ma".
 include "delayed_updating/syntax/prototerm_eq.ma".
 include "delayed_updating/syntax/path_closed.ma".
 include "delayed_updating/syntax/path_balanced.ma".
+include "delayed_updating/syntax/path_guard.ma".
 include "delayed_updating/syntax/path_structure.ma".
 include "delayed_updating/notation/relations/black_rightarrow_ibf_3.ma".
 include "ground/relocation/tr_uni.ma".
-include "ground/arith/nat_rplus.ma".
-include "ground/xoa/ex_6_5.ma".
+include "ground/xoa/ex_7_5.ma".
 
 (* IMMEDIATE BALANCED FOCUSED REDUCTION *************************************)
 
 definition ibfr (r): relation2 prototerm prototerm ≝
            λt1,t2.
            ∃∃p,b,q,m,n. p●𝗔◗b●𝗟◗q = r &
-           ⊗b ϵ 𝐁 & b ϵ 𝐂❨Ⓣ,m❩ & q ϵ 𝐂❨Ⓕ,n❩ & r◖𝗱↑n ϵ t1 &
+           p ϵ 𝐆 & ⊗b ϵ 𝐁 & b ϵ 𝐂❨Ⓕ,m❩ & q ϵ 𝐂❨Ⓕ,n❩ & r◖𝗱↑n ϵ t1 &
            t1[⋔r←🠡[𝐮❨↑(m+n)❩](t1⋔(p◖𝗦))] ⇔ t2
 .
 
@@ -41,6 +41,6 @@ interpretation
 lemma ibfr_eq_trans (t) (t1) (t2) (r):
       t1 ➡𝐢𝐛𝐟[r] t → t ⇔ t2 → t1 ➡𝐢𝐛𝐟[r] t2.
 #t #t1 #t2 #r
-* #p #b #q #m #n #Hr #Hb #Hm #Hn #Ht1 #Ht #Ht2
-/3 width=13 by subset_eq_trans, ex6_5_intro/
+* #p #b #q #m #n #Hr#Hp #Hb #Hm #Hn #Ht1 #Ht #Ht2
+/3 width=14 by subset_eq_trans, ex7_5_intro/
 qed-.