data/mathematica/89.mml
<math
xmlns='http://www.w3.org/1998/Math/MathML'>
<semantics>
<mrow>
<msup>
<mi>σ</mi>
<mn>2</mn>
</msup>
<mo></mo>
<mrow>
<mi>V</mi>
<mo>⁢</mo>
<mi>X</mi>
<mtext></mtext>
<semantics>
<msup>
<mi>X</mi>
<mi fontfamily='Helvetica'>T</mi>
</msup>
<annotation encoding='Mathematica'>TemplateBox[List["X"], "Transpose", Rule[SyntaxForm, SuperscriptBox]]</annotation>
</semantics>
</mrow>
</mrow>
<annotation-xml encoding='MathML-Content'>
<apply>
<eq />
<apply>
<power />
<ci>σ</ci>
<cn type='integer'>2</cn>
</apply>
<apply>
<times />
<ci>V</ci>
<ci>X</ci>
<apply>
<transpose />
<ci>X</ci>
</apply>
</apply>
</apply>
</annotation-xml>
</semantics>
</math>