ag-gipp/GoUldI

<math 
  xmlns="http://www.w3.org/1998/Math/MathML" display="block" alttext="upper N times upper N">
  <semantics>
    <mrow data-semantic-type="infixop" data-semantic-role="unknown" data-semantic-id="3" data-semantic-children="0,2" data-semantic-content="1">
      <mi data-semantic-type="identifier" data-semantic-role="latinletter" data-semantic-font="italic" data-semantic-id="0" data-semantic-parent="3">N</mi>
      <mo data-semantic-type="operator" data-semantic-role="unknown" data-semantic-id="1" data-semantic-parent="3" data-semantic-operator="infixop,×">×
        <!-- × -->
      </mo>
      <mi data-semantic-type="identifier" data-semantic-role="latinletter" data-semantic-font="italic" data-semantic-id="2" data-semantic-parent="3">N</mi>
    </mrow>
    <annotation encoding="application/x-tex">N\times N</annotation>
  </semantics>
</math>