X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flambdadelta%2Fground%2Frelocation%2Fpr_pat_basic.ma;h=ebe55c37ec6bb787899990bce022885adfe72b3e;hb=77479649510792efe4d9cbff508e118360862594;hp=ca6abde3328c3a6d948b4fd6092d7dacacda2480;hpb=9b4e20442ec5a4028cfe2b6fe836c94acdb033b8;p=helm.git

diff --git a/matita/matita/contribs/lambdadelta/ground/relocation/pr_pat_basic.ma b/matita/matita/contribs/lambdadelta/ground/relocation/pr_pat_basic.ma
index ca6abde33..ebe55c37e 100644
--- a/matita/matita/contribs/lambdadelta/ground/relocation/pr_pat_basic.ma
+++ b/matita/matita/contribs/lambdadelta/ground/relocation/pr_pat_basic.ma
@@ -20,14 +20,14 @@ include "ground/relocation/pr_nat_basic.ma".
 
 (*** at_basic_lt *)
 lemma pr_pat_basic_lt (m) (n) (i):
-      ninj i ≤ m → @❨i, 𝐛❨m,n❩❩ ≘ i.
+      ninj i ≤ m → ＠⧣❨i, 𝐛❨m,n❩❩ ≘ i.
 #m #n #i >(npsucc_pred i) #Hmi
 /2 width=1 by pr_nat_basic_lt/
 qed.
 
 (*** at_basic_ge *)
 lemma pr_pat_basic_ge (m) (n) (i):
-      m < ninj i → @❨i, 𝐛❨m,n❩❩ ≘ i+n.
+      m < ninj i → ＠⧣❨i, 𝐛❨m,n❩❩ ≘ i+n.
 #m #n #i >(npsucc_pred i) #Hmi <nrplus_npsucc_sn
 /3 width=1 by pr_nat_basic_ge, nlt_inv_succ_dx/
 qed.
@@ -36,10 +36,10 @@ qed.
 
 (*** at_basic_inv_lt *)
 lemma pr_pat_basic_inv_lt (m) (n) (i) (j):
-      ninj i ≤ m → @❨i, 𝐛❨m,n❩❩ ≘ j → i = j.
+      ninj i ≤ m → ＠⧣❨i, 𝐛❨m,n❩❩ ≘ j → i = j.
 /3 width=4 by pr_pat_basic_lt, pr_pat_mono/ qed-.
 
 (*** at_basic_inv_ge *)
 lemma pr_pat_basic_inv_ge (m) (n) (i) (j):
-      m < ninj i → @❨i, 𝐛❨m,n❩❩ ≘ j → i+n = j.
+      m < ninj i → ＠⧣❨i, 𝐛❨m,n❩❩ ≘ j → i+n = j.
 /3 width=4 by pr_pat_basic_ge, pr_pat_mono/ qed-.