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<div><span class="kw">theorem </span><a NAME="T28"><span class="comment"><font color="firebrick">:: COUNTERS:28</font></span><br/></a><div class="add"> for <font color="Olive" title="b1">F</font>, <font color="Olive" title="b2">X</font> being    <a href="hidden.html#M2" title="HIDDEN:mode.2">set</a>   st <font color="Olive" title="b2">X</font> <a href="tarski.html#R2" title="TARSKI:pred.2">in</a> <font color="Olive" title="b1">F</font> &amp; <font color="Olive" title="b2">X</font> is  <a href="counters.html#V2" title="COUNTERS:attr.2">ext-natural-membered</a>  holds <br/> <a href="setfam_1.html#K1" title="SETFAM_1:func.1">meet</a> <font color="Olive" title="b1">F</font> is  <a href="counters.html#V2" title="COUNTERS:attr.2">ext-natural-membered</a> </div></div>
