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<div><span class="kw">theorem </span><a NAME="T47"><span class="comment"><font color="firebrick">:: MMLQUERY:47</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">L</font> being   <a href="mmlquery.html#NM1" title="MMLQUERY:NM.1">List</a> of <font color="Olive" title="b1">X</font><br/>  for <font color="Olive" title="b3">F</font> being   <a href="mmlquery.html#V1" title="MMLQUERY:attr.1">filtering</a>  <a href="mmlquery.html#NM2" title="MMLQUERY:NM.2">Operation</a> of <font color="Olive" title="b1">X</font> holds  <font color="Olive" title="b2">L</font> <a href="mmlquery.html#K2" title="MMLQUERY:func.2">|</a> <font color="Olive" title="b3">F</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <font color="Olive" title="b2">L</font> <a href="mmlquery.html#K4" title="MMLQUERY:func.4">WHERE</a> <font color="Olive" title="b3">F</font></div></div>
