<<< omml
<?xml version="1.0" encoding="UTF-8"?>
<m:oMathPara>
  <m:oMathParaPr>
    <m:jc m:val="center" />
  </m:oMathParaPr>
  <m:oMath>
    <m:sSub>
      <m:e>
        <m:r>
          <m:rPr>
            <m:sty m:val="p" />
          </m:rPr>
          <m:t>u</m:t>
        </m:r>
      </m:e>
      <m:sub>
        <m:r>
          <m:rPr>
            <m:sty m:val="p" />
          </m:rPr>
          <m:t>n</m:t>
        </m:r>
      </m:sub>
    </m:sSub>
    <m:limUpp>
      <m:e>
        <m:r>
          <m:rPr>
            <m:sty m:val="p" />
          </m:rPr>
          <m:t>→</m:t>
        </m:r>
      </m:e>
      <m:lim>
        <m:r>
          <m:rPr>
            <m:sty m:val="p" />
          </m:rPr>
          <m:t>w</m:t>
        </m:r>
      </m:lim>
    </m:limUpp>
    <m:r>
      <m:rPr>
        <m:sty m:val="p" />
      </m:rPr>
      <m:t>u</m:t>
    </m:r>
  </m:oMath>
</m:oMathPara>

>>> native
[ ESub (EIdentifier "u") (EIdentifier "n")
, EOver True (ESymbol Rel "\8594") (EIdentifier "w")
, EIdentifier "u"
]