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<div><span class="kw">theorem </span><span class="lab"><font color="Green" title="E58">Th15</font></span>: <a NAME="T50"><span class="comment"><font color="firebrick">:: POLNOT_1:50</font></span><br/></a><div class="add"> for <font color="Olive" title="b1">B</font> being   <a href="polnot_1.html#NM2" title="POLNOT_1:NM.2">antichain</a> holds  <font color="Olive" title="b1">B</font> is <font color="Olive" title="b1">B</font> <a href="polnot_1.html#V6" title="POLNOT_1:attr.6">-headed</a> </div></div>
