 top;"><span
 style="font-family: arial; font-style: italic;">left</span>(<span
 style="font-weight: bold; font-style: italic;">f</span>)<br>
      <span style="font-family: arial; font-style: italic;">expr</span>(<span
 style="font-style: italic; font-weight: bold;">f</span>)<small><sup>&#8211;1</sup></small><br>
      </td>
      <td style="vertical-align: top;">left adjoint monotonic function:<br>
inverse image of the expression function of <span
 style="font-style: italic; font-weight: bold;">f</span> <