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<a NAME="E1:4"/>
<span class="p1">(<span class="default"><a href="subset_1.html#K2">[#]</a> <a href="numbers.html#K1">REAL</a> </span>)</span> <a href="subset_1.html#K3">`</a>  <a href="hidden.html#R1">=</a>  <a href="subset_1.html#K1">{}</a> <a href="numbers.html#K1">REAL</a> 
 
<b>by </b><i><a class="ref" href="xboole_1.html#T37">XBOOLE_1:37</a></i>;<br/>
<b>hence </b><a NAME="E2:4"/>
 <a href="subset_1.html#K2">[#]</a> <a href="numbers.html#K1">REAL</a>  is <a href="rcomp_1.html#V3">open</a>
 <b>by </b><i><a class="ref" href="fcont_3.html#T3" target="_self">Th3</a>, <a class="ref" href="rcomp_1.html#D5">RCOMP_1:def 5</a></i>;<br/>


</div>
