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

<b>let </b><font color="Maroon">M</font> be   <a href="card_1.html#NM1">Cardinal</a>;<br/>

<a NAME="E1:18"/>
1 <a href="nat_1.html#K1">+</a> 1 <a href="hidden.html#R1">=</a> 2
 
;<br/>
<a NAME="E2:18"/><b>then </b>
 <a href="card_1.html#K2">nextcard</a> <span class="p1">(<span class="default"><a href="card_1.html#K1">Card</a> 1</span>)</span> <a href="hidden.html#R1">=</a>  <a href="card_1.html#K1">Card</a> 2
 
<b>by </b><i><a class="ref" href="card_1.html#T76">CARD_1:76</a></i>;<br/>
<b>hence </b><a NAME="E3:18"/>
( 1 <a href="card_1.html#NR2" target="_self">&lt;`</a> <font color="Maroon">M</font> iff 2 <a href="card_1.html#NR1" target="_self">&lt;=`</a> <font color="Maroon">M</font> )
 <b>by </b><i>, </i>;<br/>


</div>
