a href="scalar.html">scalar</a></span>&lt;B&gt;::type</i> are well defined</li>
<li><i><span class="RenoLink"><a href="is_mat.html">is_mat</a></span>&lt;A&gt;::value || <span class="RenoLink"><a href="is_mat.html">is_mat</a></span>&lt;B&gt;::value</i> is <i>true</i></li>
</ul></div>
<h4>Requirements:</h4>
<div><ul><li><i><span class="RenoLink"><a href="is_mat.html">is_mat</a></span>&lt;<span class="RenoLink">deduce_mat2</span>&lt;A,B&gt;::type&gt;::value</i> must be <i>true</i></li>
<li><i><span class=