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<div><span class="kw">theorem </span><span class="lab"><font color="Green" title="E49">Th57</font></span>: <a NAME="T57"><span class="comment"><font color="firebrick">:: MOEBIUS1:57</font></span><br/></a><div class="add"> for <font color="Olive" title="b1">k</font> being   non  <a href="ordinal1.html#V8" title="ORDINAL1:attr.8">zero</a>  <a href="ordinal1.html#NM6" title="ORDINAL1:NM.6">Nat</a>  st <font color="Olive" title="b1">k</font> is  <a href="moebius1.html#NV2" title="MOEBIUS1:NV.2">square-free</a>  holds <br/> <a href="moebius1.html#K6" title="MOEBIUS1:func.6">Radical</a> <font color="Olive" title="b1">k</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <font color="Olive" title="b1">k</font></div></div>
