<?xml version="1.0"?>
<div><span class="kw">theorem </span><a NAME="T40"><span class="comment"><font color="firebrick">:: TREES_2:40</font></span><br/></a><div class="add"> for <font color="Olive" title="b1">X</font>, <font color="Olive" title="b2">Y</font> being    <a href="hidden.html#M2" title="HIDDEN:mode.2">set</a> <br/>  for <font color="Olive" title="b3">B</font> being   <a href="ordinal1.html#V6" title="ORDINAL1:attr.6">c=-linear</a>  <a href="subset_1.html#NM2" title="SUBSET_1:NM.2">Subset</a> of <span class="p1">(<span class="default"><a href="partfun1.html#K4" title="PARTFUN1:func.4">PFuncs</a> (<font color="Olive" title="b1">X</font>,<font color="Olive" title="b2">Y</font>)</span>)</span> holds   <a href="tarski.html#K3" title="TARSKI:func.3">union</a> <font color="Olive" title="b3">B</font> <a href="tarski.html#R2" title="TARSKI:pred.2">in</a>  <a href="partfun1.html#K4" title="PARTFUN1:func.4">PFuncs</a> (<font color="Olive" title="b1">X</font>,<font color="Olive" title="b2">Y</font>)</div></div>
