<?xml version="1.0"?>
<div><span class="kw">theorem </span><a NAME="T209"><span class="comment"><font color="firebrick">:: XXREAL_1:209</font></span><br/></a><div class="add"><span class="p1"><a href="xxreal_1.html#K1" title="XXREAL_1:func.1">[.</a><span class="default"><a href="xxreal_0.html#K2" title="XXREAL_0:func.2">-infty</a>,<a href="xxreal_0.html#K1" title="XXREAL_0:func.1">+infty</a></span><a href="xxreal_1.html#K1" title="XXREAL_1:func.1">.]</a></span> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  <a href="numbers.html#K6" title="NUMBERS:func.6">ExtREAL</a> </div></div>
