n><span class="special">::</span><span class="identifier">relate</span><span class="special">::</span><span class="identifier">matrix</span><span class="special">&lt;</span> <span class="number">3</span><span class="special">,</span> <span class="number">3</span> <span class="special">&gt;</span>
<span class="special">{</span>
  <span class="comment">// ...</span>
<span class="special">};</span>
</pre>
<p>
        </p>
<h6>
<a name="geometry.reference.de9im.de9im_matrix.h2"></a>
          <span class="phras