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<div><span class="kw">theorem </span><span class="lab"><font color="Green" title="E18">Th28</font></span>: <a NAME="T29"><span class="comment"><font color="firebrick">:: BORSUK_5:29</font></span><br/></a><div class="add"> for <font color="Olive" title="b1">a</font>, <font color="Olive" title="b2">b</font>, <font color="Olive" title="b3">c</font> being   <a href="xreal_0.html#NM1" title="XREAL_0:NM.1">Real</a> holds <br/> ( <font color="Olive" title="b3">c</font> <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a>  <a href="borsuk_5.html#K2" title="BORSUK_5:func.2">RAT</a> (<font color="Olive" title="b1">a</font>,<font color="Olive" title="b2">b</font>) iff ( <font color="Olive" title="b3">c</font> is  <a href="rat_1.html#V1" title="RAT_1:attr.1">rational</a>  &amp; <font color="Olive" title="b1">a</font> <a href="xxreal_0.html#NR3" title="XXREAL_0:NR.3">&lt;</a> <font color="Olive" title="b3">c</font> &amp; <font color="Olive" title="b3">c</font> <a href="xxreal_0.html#NR3" title="XXREAL_0:NR.3">&lt;</a> <font color="Olive" title="b2">b</font> ) )</div></div>
