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<div><span class="kw">theorem </span><a NAME="T22"><span class="comment"><font color="firebrick">:: NAT_2:22</font></span><br/></a><div class="add"> for <font color="Olive" title="b1">n</font> being   <a href="ordinal1.html#NM6" title="ORDINAL1:NM.6">Nat</a> holds <br/> ( <font color="Olive" title="b1">n</font> is  <a href="abian.html#NV2" title="ABIAN:NV.2">odd</a>  iff <font color="Olive" title="b1">n</font> <a href="nat_d.html#K4" title="NAT_D:func.4">mod</a> 2 <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> 1 ) <span class="kw">by</span> <span class="lab"><a class="ref" href="nat_2.html#T21" target="_self" onmouseover="rs('nat_2/T21')" onmouseout="rh()">Th21</a>, <a class="ref" href="nat_d.html#T12" onmouseover="rs('nat_d/T12')" onmouseout="rh()">NAT_D:12</a></span>;<br/></div></div>
