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<b>let </b><font color="Maroon">t</font> be    <a href="trees_3.html#M5">Element</a> of  <a href="trees_3.html#K5">FinTrees</a> <font color="Maroon">D</font>;<br/>

<a NAME="E1:26_1_1"/>
 <a href="relat_1.html#K1">dom</a> <font color="Maroon">t</font> is <a href="finset_1.html#V1">finite</a>
 
;<br/>
<b>hence </b><a NAME="E2:26_1_1"/>
<font color="Maroon">t</font> is <a href="finset_1.html#V1">finite</a>
 <b>by </b><i><a class="ref" href="finset_1.html#T29">FINSET_1:29</a></i>;<br/>


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