<?xml version="1.0"?>
<div><span class="kw">theorem </span><a NAME="T171"><span class="comment"><font color="firebrick">:: MEMBER_1:171</font></span><br/></a><div class="add"> for <font color="Olive" title="b1">F</font> being   <a href="membered.html#V2" title="MEMBERED:attr.2">ext-real-membered</a>   <a href="hidden.html#M2" title="HIDDEN:mode.2">set</a> <br/>  for <font color="Olive" title="b2">f</font> being   <a href="xxreal_0.html#NM1" title="XXREAL_0:NM.1">ExtReal</a> holds  <font color="Olive" title="b1">F</font> <a href="member_1.html#K20" title="MEMBER_1:func.20">--</a> <font color="Olive" title="b2">f</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  <a href="member_1.html#K4" title="MEMBER_1:func.4">--</a> <span class="p1">(<span class="default"><font color="Olive" title="b2">f</font> <a href="member_1.html#K18" title="MEMBER_1:func.18">--</a> <font color="Olive" title="b1">F</font></span>)</span> <span class="kw">by</span> <span class="lab"><a class="ref" href="member_1.html#T60" target="_self" onmouseover="rs('member_1/T60')" onmouseout="rh()">Th60</a></span>;<br/></div></div>
