t class="docutils literal"><span class="pre">prod</span></tt>,
<tt class="docutils literal"><span class="pre">cumprod</span></tt>, <tt class="docutils literal"><span class="pre">geo_mean</span></tt>, <tt class="docutils literal"><span class="pre">sqrt</span></tt>, <tt class="docutils literal"><span class="pre">norm</span></tt>, <tt class="docutils literal"><span class="pre">sum_largest</span></tt>,
<tt class="docutils literal"><span class="pre">norm_largest</span></tt>.</li>
</ul>
<p>It is entirely possible