rec-imaginaryi1

imaginary i

<math xmlns="http://www.w3.org/1998/Math/MathML">
  <apply>
    <csymbol cd="relation1">eq</csymbol>
    <apply>
      <csymbol cd="arith1">power</csymbol>
      <csymbol cd="nums1">i</csymbol>
      <cn>2</cn>
    </apply>
    <cn>-1</cn>
  </apply>
</math>

Author: MathML 2 Recommendation