X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=matita%2Fmatita%2Flib%2Fbasics%2Fcore_notation.ma;h=a0ad502b942165237493cac0375c010cb08a4dd0;hb=24ba1bb3f67505d3e384747ff90d26d3996bd3f5;hp=cdc535b81de67c9f0233fe588afcc65ddb98f230;hpb=75f395f0febd02de8e0f881d918a8812b1425c8d;p=helm.git

diff --git a/matita/matita/lib/basics/core_notation.ma b/matita/matita/lib/basics/core_notation.ma
index cdc535b81..a0ad502b9 100644
--- a/matita/matita/lib/basics/core_notation.ma
+++ b/matita/matita/lib/basics/core_notation.ma
@@ -289,15 +289,6 @@ notation "hvbox(a break \approx b)" non associative with precedence 45
 notation "hvbox(a break # b)" non associative with precedence 45 
   for @{ 'apart $a $b}.
 
-notation < "↓ \ensp a" with precedence 60 for @{ 'downarrow $a }.
-notation > "↓ a" with precedence 60 for @{ 'downarrow $a }.
-
-notation "hvbox(U break ↓ V)" non associative with precedence 60 for @{ 'fintersects $U $V }.
-
-notation "↑a" with precedence 60 for @{ 'uparrow $a }.
-
-notation "hvbox(a break ↑ b)" with precedence 60 for @{ 'funion $a $b }.
-
 notation < "term 76 a \sup term 90 b" non associative with precedence 75 for @{ 'exp $a $b}.
 notation > "a \sup term 90 b" non associative with precedence 75 for @{ 'exp $a $b}.
 notation > "a ^ term 90 b"  non associative with precedence 75 for @{ 'exp $a $b}.