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

<b>let </b><font color="Maroon">c<sub>3</sub></font> be    <a href="orders_2.html#L1">RelStr</a> ;<br/>

<b>take </b>
 <a href="grcat_1.html#K7">id</a> <font color="Maroon">c<sub>3</sub></font>
;<br/>

<b>thus </b><a NAME="E1:14_1_1"/>
 <a href="grcat_1.html#K7">id</a> <font color="Maroon">c<sub>3</sub></font> is <a href="waybel_0.html#V23">isomorphic</a>
 ;<br/>


</div>
