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<b>consider </b><font color="Maroon" title="c1">T</font> being  <a href="finset_1.html#V1" title="FINSET_1:attr.1">finite</a> <a href="trees_1.html#NM1" title="TREES_1:NM.1">Tree</a>;<br/>
<a NAME="E2:5_1_1"/>
<font color="Maroon" title="c1">T</font> <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a>  <a href="trees_3.html#K2" title="TREES_3:func.2">FinTrees</a> 
 
<b>by </b><i><a class="ref" href="trees_3.html#D2" target="_self" title="TREES_3:def.2">Def2</a></i>;<br/>
<b>hence </b><a NAME="E3:5_1_1"/>
not  <a href="trees_3.html#K2" title="TREES_3:func.2">FinTrees</a>  is <a href="xboole_0.html#V1" title="XBOOLE_0:attr.1">empty</a>
 ;<br/>


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