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<div><span class="kw">theorem </span><span class="lab"><font color="Green" title="E4">SFS</font></span>: <a NAME="T8"><span class="comment"><font color="firebrick">:: NEWTON06:8</font></span><br/></a><div class="add"> for <font color="Olive" title="b1">a</font> being   <a href="ordinal1.html#NM6" title="ORDINAL1:NM.6">Nat</a> holds <br/> ( ( <font color="Olive" title="b1">a</font> is  <a href="pythtrip.html#V1" title="PYTHTRIP:attr.1">square</a>  &amp; <font color="Olive" title="b1">a</font> is  <a href="moebius1.html#NV2" title="MOEBIUS1:NV.2">square-free</a>  ) iff <font color="Olive" title="b1">a</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> 1 )</div></div>
