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<a NAME="E1:75_3_1"/>
<font color="Maroon">a</font> <a href="xcmplx_0.html#K6">-</a> 1 <a href="xxreal_0.html#NR3" target="_self">&lt;</a> <font color="Maroon">a</font>
 
<b>by </b><i><a class="ref" href="xreal_1.html#T148">XREAL_1:148</a></i>;<br/>
<b>hence </b><a NAME="E2:75_3_1"/>
not <span class="p1"><a href="borsuk_5.html#NK2" target="_self">].-infty,</a><span class="default"><font color="Maroon">a</font></span><a href="borsuk_5.html#NK2" target="_self">.[</a></span> is <a href="xboole_0.html#V1">empty</a>
 <b>by </b><i/>;<br/>


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