rec-union1
MathML 2 Recommendation
A union B
Content/TheoryOfSets/union
../../../Content/TheoryOfSets/list/rec-list2
../../../Content/TheoryOfSets/union/union2
<math xmlns="http://www.w3.org/1998/Math/MathML">
<apply>
<union/>
<ci> A </ci>
<ci> B </ci>
</apply>
</math>