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<div><span class="kw">theorem </span><span class="lab"><font color="Green" title="E14">Th21</font></span>: <a NAME="T21"><span class="comment"><font color="firebrick">:: MEASURE1:21</font></span><br/></a><div class="add"> for <font color="Olive" title="b1">X</font> being    <a href="hidden.html#M2" title="HIDDEN:mode.2">set</a> <br/>  for <font color="Olive" title="b2">S</font> being   <a href="measure1.html#NM3" title="MEASURE1:NM.3">N_Sub_set_fam</a> of <font color="Olive" title="b1">X</font> holds  <font color="Olive" title="b1">X</font> <a href="measure1.html#NK1" title="MEASURE1:NK.1">\</a> <font color="Olive" title="b2">S</font> is   <a href="measure1.html#NM3" title="MEASURE1:NM.3">N_Sub_set_fam</a> of <font color="Olive" title="b1">X</font></div></div>
