<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML">
<mml:msubsup> <mml:mi mathvariant="normal">I</mml:mi>
<mml:mi mathvariant="normal">A</mml:mi>
<mml:mi mathvariant="normal">S</mml:mi>
</mml:msubsup>
</mml:math>