X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flambdadelta%2Fdelayed_updating%2Funwind1%2Funwind_constructors.ma;h=a412797a0b95e998cc40968d837c221557915ae1;hb=77479649510792efe4d9cbff508e118360862594;hp=d2a552d843d48c00c28b5a25b4507de73077bd09;hpb=9b4e20442ec5a4028cfe2b6fe836c94acdb033b8;p=helm.git

diff --git a/matita/matita/contribs/lambdadelta/delayed_updating/unwind1/unwind_constructors.ma b/matita/matita/contribs/lambdadelta/delayed_updating/unwind1/unwind_constructors.ma
index d2a552d84..a412797a0 100644
--- a/matita/matita/contribs/lambdadelta/delayed_updating/unwind1/unwind_constructors.ma
+++ b/matita/matita/contribs/lambdadelta/delayed_updating/unwind1/unwind_constructors.ma
@@ -18,20 +18,20 @@ include "delayed_updating/syntax/prototerm_constructors.ma".
 (* UNWIND FOR PROTOTERM *****************************************************)
 
 lemma unwind_iref_sn (f) (t:prototerm) (n:pnat):
-      â¼[ð®â¨f@â¨nâ©â©]t â â¼[f](ðn.t).
+      â¼[ð®â¨fï¼ â§£â¨nâ©â©]t â â¼[f](ðn.t).
 #f #t #n #p * #q #Hq #H0 destruct
 @(ex2_intro â¦ (ð±nâðºâq))
 /2 width=1 by in_comp_iref/
 qed-.
 
 lemma unwind_iref_dx (f) (t) (n:pnat):
-      â¼[f](ðn.t) â â¼[ð®â¨f@â¨nâ©â©]t.
+      â¼[f](ðn.t) â â¼[ð®â¨fï¼ â§£â¨nâ©â©]t.
 #f #t #n #p * #q #Hq #H0 destruct
 elim (in_comp_inv_iref â¦ Hq) -Hq #p #Hp #Ht destruct
 /2 width=1 by in_comp_unwind_bi/
 qed-.
 
 lemma unwind_iref (f) (t) (n:pnat):
-      â¼[ð®â¨f@â¨nâ©â©]t â â¼[f](ðn.t).
+      â¼[ð®â¨fï¼ â§£â¨nâ©â©]t â â¼[f](ðn.t).
 /3 width=1 by conj, unwind_iref_sn, unwind_iref_dx/
 qed.