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<span class="kw">set </span><font color="Maroon" title="c1">T</font> =  the   <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="E1:5_1_1"/>
 the   <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> <a href="tarski.html#R2" title="TARSKI:pred.2">in</a>  <a href="trees_3.html#K2" title="TREES_3:func.2">FinTrees</a> 
 
<span class="kw">by</span> <span class="lab"><a class="ref" href="trees_3.html#D2" target="_self" onmouseover="rs('trees_3/D2')" onmouseout="rh()">Def2</a></span>;<br/>
<span class="kw">hence </span><a NAME="E2:5_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> 
 ; <a class="txt" onmouseover="tooltip.show('hs',this)" onmouseout="tooltip.hide()" onclick="hs(this)" href="javascript:()"><span class="comment"><font color="firebrick">::  thesis: </font></span></a><span class="hide"> verum</span><br/>


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