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<a NAME="E1:78"/>
 <a href="relat_1.html#K1" target="_self">dom</a> <span class="p1">(<span class="default"><a href="relat_1.html#K6" target="_self">id</a> <a href="xboole_0.html#K1">{}</a> </span>)</span> <a href="hidden.html#R1">=</a>  <a href="xboole_0.html#K1">{}</a> 
 
<b>by </b><i><a class="ref" href="relat_1.html#T71" target="_self">Th71</a></i>;<br/>
<b>hence </b><a NAME="E2:78"/>
 <a href="relat_1.html#K6" target="_self">id</a> <a href="xboole_0.html#K1">{}</a>  <a href="hidden.html#R1">=</a>  <a href="xboole_0.html#K1">{}</a> 
 <b>by </b><i><a class="ref" href="relat_1.html#T64" target="_self">Th64</a></i>;<br/>


</div>
