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<div><span class="kw">theorem </span><span class="lab"><font color="Green" title="E17">Th3</font></span>: <a NAME="T3"><span class="comment"><font color="firebrick">:: ZF_FUND1:3</font></span><br/></a><div class="add"> for <font color="Olive" title="b1">V</font> being   <a href="classes2.html#NM1" title="CLASSES2:NM.1">Universe</a><br/>  for <font color="Olive" title="b2">X</font> being   <a href="zf_refle.html#NM1" title="ZF_REFLE:NM.1">Subclass</a> of <font color="Olive" title="b1">V</font>  st <font color="Olive" title="b2">X</font> is  <a href="zf_fund1.html#V8" title="ZF_FUND1:attr.8">closed_wrt_A1-A7</a>  holds <br/> <a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a>  <a href="tarski.html#R2" title="TARSKI:pred.2">in</a> <font color="Olive" title="b2">X</font></div></div>
