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<a NAME="E1:28_1_1"/>
<span class="p1"><a href="rcomp_1.html#K1">[.</a><span class="default">0,1</span><a href="rcomp_1.html#K1">.]</a></span> is <a href="integra1.html#V1">closed-interval</a>
 
<b>by </b><i><a class="ref" href="integra1.html#D1">INTEGRA1:def 1</a></i>;<br/>
<b>hence </b><a NAME="E2:28_1_1"/>
not <span class="p1"><a href="rcomp_1.html#K1">[.</a><span class="default">0,1</span><a href="rcomp_1.html#K1">.]</a></span> is <a href="xboole_0.html#V1">empty</a>
 <b>by </b><i><a class="ref" href="integra1.html#T2">INTEGRA1:2</a></i>;<br/>


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