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

<a NAME="E1:15_1_1"/>
 <a href="gr_cy_1.html#K5">INT.Group</a> <font color="Maroon">n</font> <a href="hidden.html#R1">=</a>  <a href="group_1.html#G1">HGrStr</a>(# <span class="p1">(<span class="default"><a href="gr_cy_1.html#K1">Segm</a> <font color="Maroon">n</font></span>)</span>,<span class="p1">(<span class="default"><a href="gr_cy_1.html#K4">addint</a> <font color="Maroon">n</font></span>)</span> #)
 
<b>by </b><i>, <a class="ref" href="gr_cy_1.html#D6">GR_CY_1:def 6</a></i>;<br/>
<b>hence </b><a NAME="E2:15_1_1"/>
<font color="Maroon">h</font> is    <a href="subset_1.html#M1">Element</a> of  <a href="numbers.html#K5">NAT</a> 
 <b>by </b><i><a class="ref" href="tarski.html#D3">TARSKI:def 3</a></i>;<br/>


</div>
