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<div><span class="kw">theorem </span><a NAME="T26"><span class="comment"><font color="firebrick">:: FINANCE3:26</font></span><br/></a><div class="add"> ex <font color="Olive" title="b1">Omega</font> being   non  <a href="xboole_0.html#V1" title="XBOOLE_0:attr.1">empty</a>   <a href="hidden.html#M2" title="HIDDEN:mode.2">set</a>  ex <font color="Olive" title="b2">F1</font>, <font color="Olive" title="b3">F2</font>, <font color="Olive" title="b4">F3</font> being   <a href="prob_1.html#NM3" title="PROB_1:NM.3">SigmaField</a> of <font color="Olive" title="b1">Omega</font> st <br/>( <font color="Olive" title="b2">F1</font> <a href="xboole_0.html#R2" title="XBOOLE_0:pred.2">c&lt;</a> <font color="Olive" title="b3">F2</font> &amp; <font color="Olive" title="b3">F2</font> <a href="xboole_0.html#R2" title="XBOOLE_0:pred.2">c&lt;</a> <font color="Olive" title="b4">F3</font> )</div></div>
