ecover it by squaring the norm after the fact.</p>
<p>Conversions using <tt class="docutils literal"><span class="pre">quad_form</span></tt> can sometimes be a bit more difficult. For instance, consider</p>
<div class="highlight-none"><div class="highlight"><pre>quad_form( A * x - b, Q ) &lt;= 1
</pre></div>
</div>
<p>where <tt class="docutils literal"><span class="pre">Q</span></tt> is a positive definite matrix. The equivalent <tt class="docutils literal"><span class="pre">norm</span></tt> version is</p>
