<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML">
<mml:mi>n</mml:mi>
<mml:mo class="MathClass-rel">=</mml:mo>
<mml:mfenced close="|" open="|" separators=""> <mml:mrow> <mml:mi mathvariant="script">V</mml:mi>
</mml:mrow>
</mml:mfenced>
</mml:math>