X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flambdadelta%2Fground_2%2Fnotation%2Frelations%2Frunion_3.ma;h=54b03667556a45a5d6987dbe5a8cc1363e0042de;hb=75f395f0febd02de8e0f881d918a8812b1425c8d;hp=16120c08de6db2c1719b17ef7a7737cb44c3822c;hpb=d59f344b1e4b377e2f06abd9f8856d686d21b222;p=helm.git

diff --git a/matita/matita/contribs/lambdadelta/ground_2/notation/relations/runion_3.ma b/matita/matita/contribs/lambdadelta/ground_2/notation/relations/runion_3.ma
index 16120c08d..54b036675 100644
--- a/matita/matita/contribs/lambdadelta/ground_2/notation/relations/runion_3.ma
+++ b/matita/matita/contribs/lambdadelta/ground_2/notation/relations/runion_3.ma
@@ -14,6 +14,6 @@
 
 (* GENERAL NOTATION USED BY THE FORMAL SYSTEM λδ ****************************)
 
-notation "hvbox( L1 ⋓ break term 46 L2 ≡ break term 46 L )"
+notation "hvbox( L1 ⋓ break term 46 L2 ≘ break term 46 L )"
    non associative with precedence 45
    for @{ 'RUnion $L1 $L2 $L }.