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<div><span class="kw">theorem </span><a NAME="T21"><span class="comment"><font color="firebrick">:: RAT_1:21</font></span><br/></a><div class="add"> for <font color="Olive" title="b1">p</font> being   <a href="rat_1.html#NM1" title="RAT_1:NM.1">Rational</a> holds <br/> ( 1 <a href="xxreal_0.html#NR3" title="XXREAL_0:NR.3">&lt;</a>  <a href="rat_1.html#K1" title="RAT_1:func.1">denominator</a> <font color="Olive" title="b1">p</font> iff  not <font color="Olive" title="b1">p</font> is  <a href="int_1.html#V1" title="INT_1:attr.1">integer</a>  )</div></div>
