X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=helm%2Fsoftware%2Fmatita%2Flibrary%2Falgebra%2Fsemigroups.ma;h=af5e01e06c0bb1064271b90c6565d591c9e5b011;hb=0e9f9d6d7a0466ee132553fb7a983eac282fb12f;hp=5a739ae126c52327fcd63d9a5b192e3f95c4156f;hpb=9eabe046c1182960de8cfdba96c5414224e3a61e;p=helm.git

diff --git a/helm/software/matita/library/algebra/semigroups.ma b/helm/software/matita/library/algebra/semigroups.ma
index 5a739ae12..af5e01e06 100644
--- a/helm/software/matita/library/algebra/semigroups.ma
+++ b/helm/software/matita/library/algebra/semigroups.ma
@@ -21,12 +21,7 @@ record Magma : Type≝
    op: carrier → carrier → carrier
  }.
 
-notation "hvbox(a break \middot b)" 
-  left associative with precedence 55
-for @{ 'magma_op $a $b }.
-
-interpretation "magma operation" 'magma_op a b =
- (cic:/matita/algebra/semigroups/op.con _ a b).
+interpretation "magma operation" 'middot a b = (op _ a b).
 
 (* Semigroups *)