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<div><span class="kw">theorem </span><a NAME="T34"><span class="comment"><font color="firebrick">:: NAT_6:34</font></span><br/></a><div class="add">9 is  <a href="nat_6.html#V2" title="NAT_6:attr.2">Proth</a>  <span class="kw">by</span> <span class="lab"><a class="txt" href="nat_6.html#E43"><span class="lab"><font color="Green" title="E38">Lm7</font></span></a></span>;<br/></div></div>
