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<div><span class="kw">theorem </span><a NAME="T18"><span class="comment"><font color="firebrick">:: NUMBER05:18</font></span><br/></a><div class="add"> for <font color="Olive" title="b1">x</font>, <font color="Olive" title="b2">y</font> being   <a href="ordinal1.html#NM6" title="ORDINAL1:NM.6">Nat</a>  holds <br/>(  not <font color="Olive" title="b1">x</font> <a href="xxreal_0.html#NR3" title="XXREAL_0:NR.3">&lt;</a> 14 or  not <font color="Olive" title="b2">y</font> <a href="xxreal_0.html#NR3" title="XXREAL_0:NR.3">&lt;</a> 35 or  not <font color="Olive" title="b1">x</font>,<font color="Olive" title="b2">y</font> <a href="number05.html#R1" title="NUMBER05:pred.1">satisfy_Sierpinski_problem_35</a>  )</div></div>
