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<b>set </b><font color="Maroon">f</font> = <a href="xboole_0.html#K1">{}</a>  <a href="funcop_1.html#K2">--&gt;</a> 0;<br/>
<a NAME="E1:22"/><i><font color="Green">E31</font></i>: 
(  <a href="relat_1.html#K1">dom</a> <span class="p1">(<span class="default"><a href="xboole_0.html#K1">{}</a>  <a href="funcop_1.html#K2">--&gt;</a> 0</span>)</span> <a href="hidden.html#R1">=</a>  <a href="xboole_0.html#K1">{}</a>  &amp; ( for <font color="Olive">x</font> being   <a href="hidden.html#M1">set</a>   st <font color="Olive">x</font> <a href="hidden.html#R2">in</a>  <a href="xboole_0.html#K1">{}</a>  holds <br/><span class="p1">(<span class="default"><a href="xboole_0.html#K1">{}</a>  <a href="funcop_1.html#K2">--&gt;</a> 0</span>)</span> <a href="funct_1.html#K1">.</a> <font color="Olive">x</font> <a href="hidden.html#R1">=</a> 0 ) )
 
;<br/>
<b>thus </b><a NAME="E2:22"/>
 <a href="xboole_0.html#K1">{}</a>  is   <a href="finseq_1.html#NM1">FinSequence</a>
 <b>by </b><i>, , </i>;<br/>


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