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

<a NAME="E1:35_1_1"/>
9 <a href="hidden.html#R2">in</a> <span class="p1">{<span class="default"> <font color="Olive">b<sub>1</sub></font> where B is   <a href="nat_1.html#NM1">Nat</a> : <font color="Olive">b<sub>1</sub></font> <a href="xxreal_0.html#R1">&lt;=</a> 9 </span>}</span> 
 
;<br/>
<b>hence </b><a NAME="E2:35_1_1"/>
not  <a href="cqc_the1.html#K2" target="_self">Proof_Step_Kinds</a>  is <a href="xboole_0.html#V1">empty</a>
 ;<br/>


</div>
