X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=helm%2Fsoftware%2Fmatita%2Fcontribs%2Fdama%2Fdama%2Fbishop_set.ma;h=64ae4495d14c11fb1d215ea8d709f8b19c2db2d2;hb=80ea6f314e89d9d280338c41860cb04949319629;hp=8cb77ec24289c633e6adcb535394156e0f053224;hpb=ca41435a6021292ccba239aa173651c0be705b45;p=helm.git

diff --git a/helm/software/matita/contribs/dama/dama/bishop_set.ma b/helm/software/matita/contribs/dama/dama/bishop_set.ma
index 8cb77ec24..64ae4495d 100644
--- a/helm/software/matita/contribs/dama/dama/bishop_set.ma
+++ b/helm/software/matita/contribs/dama/dama/bishop_set.ma
@@ -23,9 +23,6 @@ record bishop_set: Type ≝ {
   bs_cotransitive: cotransitive ? bs_apart
 }.
 
-notation "hvbox(a break # b)" non associative with precedence 45 
-  for @{ 'apart $a $b}.
-  
 interpretation "bishop set apartness" 'apart x y = (bs_apart _ x y).
 
 definition bishop_set_of_ordered_set: ordered_set → bishop_set.
@@ -41,9 +38,6 @@ qed.
 (* Definition 2.2 (2) *)
 definition eq ≝ λA:bishop_set.λa,b:A. ¬ (a # b).
 
-notation "hvbox(a break \approx b)" non associative with precedence 45 
-  for @{ 'napart $a $b}.
-      
 interpretation "Bishop set alikeness" 'napart a b = (eq _ a b). 
 
 lemma eq_reflexive:∀E:bishop_set. reflexive ? (eq E).
@@ -97,7 +91,7 @@ qed.
 
 definition bs_subset ≝ λO:bishop_set.λP,Q:O→Prop.∀x:O.P x → Q x.
 
-interpretation "bishop set subset" 'subset a b = (bs_subset _ a b). 
+interpretation "bishop set subset" 'subseteq a b = (bs_subset _ a b). 
 
 definition square_bishop_set : bishop_set → bishop_set.
 intro S; apply (mk_bishop_set (S × S));