boost_1_45_0/libs/math/doc/sf_and_dist/equations/gamma_ratio0.mml

 	<math xmlns="http://www.w3.org/1998/Math/MathML" display="block">
  <mrow>
    <mtext>tgamma_ratio(a,b)</mtext>
    <mspace width="1em"/>
    <mo>=</mo>
    <mspace width="1em"/>
    <mfrac>
      <mrow>
        <mi>&#x0393;</mi>
        <mfenced>
          <mrow>
            <mi>a</mi>
          </mrow>
        </mfenced>
      </mrow>
      <mrow>
        <mi>&#x0393;</mi>
        <mfenced>
          <mrow>
            <mi>b</mi>
          </mrow>
        </mfenced>
      </mrow>
    </mfrac>
  </mrow>
</math>