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<a NAME="E1:24_1_1"/>
0 <a href="xxreal_0.html#NR3" target="_self">&lt;</a> 1
 
;<br/>
<b>hence </b><a NAME="E2:24_1_1"/>
not  <a href="nat_lat.html#K7" target="_self">NATPLUS</a>  is <a href="xboole_0.html#V1">empty</a>
 <b>by </b><i><a class="ref" href="nat_lat.html#D9" target="_self">Def9</a></i>;<br/>


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