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<b>consider </b><font color="Maroon">vt</font> being  <a href="finset_1.html#V1">finite</a> <a href="trees_2.html#NM4">DecoratedTree</a><b> such that </b><br/><a NAME="E2:67_1_1"/><i><font color="Green">E26</font></i>: 
<font color="Maroon">vt</font> <a href="msaterm.html#R1" target="_self">is_an_evaluation_of</a> <font color="Maroon">t</font>,<font color="Maroon">f</font>
 <b>by </b><i/>;<br/>
<b>reconsider </b><font color="Maroon">tf</font> = <font color="Maroon">vt</font> <a href="funct_1.html#K1">.</a> <a href="xboole_0.html#K1">{}</a>  as    <a href="subset_1.html#M1">Element</a> of the <a href="msualg_1.html#U4">Sorts</a> of <font color="Maroon">A</font> <a href="funct_1.html#K1">.</a> <span class="p1">(<span class="default"><a href="msaterm.html#K7" target="_self">the_sort_of</a> <font color="Maroon">t</font></span>)</span> <b>by </b><i><a class="ref" href="msaterm.html#T1" target="_self">Th1</a>, </i>;<br/>
<b>take </b>
<font color="Maroon">tf</font>
;<br/>

<b>take </b>
<font color="Maroon">vt</font>
;<br/>

<b>thus </b><a NAME="E4:67_1_1"/>
( <font color="Maroon">vt</font> <a href="msaterm.html#R1" target="_self">is_an_evaluation_of</a> <font color="Maroon">t</font>,<font color="Maroon">f</font> &amp; <font color="Maroon">tf</font> <a href="hidden.html#R1">=</a> <font color="Maroon">vt</font> <a href="funct_1.html#K1">.</a> <a href="xboole_0.html#K1">{}</a>  )
 <b>by </b><i><a class="ref" href="msaterm.html#T1" target="_self">Th1</a></i>;<br/>


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