<?xml version="1.0"?>
<div class="add">

<b>take </b>
<span class="p1"><a href="matrix_2.html#K4">&lt;*</a><span class="default">0</span><a href="matrix_2.html#K4">*&gt;</a></span>
;<br/>

<b>thus </b><a NAME="E1:6_1_1"/>
( not <span class="p1"><a href="matrix_2.html#K4">&lt;*</a><span class="default">0</span><a href="matrix_2.html#K4">*&gt;</a></span> is <a href="xboole_0.html#V1">empty</a> &amp; <span class="p1"><a href="matrix_2.html#K4">&lt;*</a><span class="default">0</span><a href="matrix_2.html#K4">*&gt;</a></span> is <a href="funct_1.html#V3">constant</a> )
 ;<br/>


</div>
