<?xml version="1.0"?>
<div><span class="kw">theorem </span><span class="lab"><font color="Green" title="E7">Th4</font></span>: <a NAME="T4"><span class="comment"><font color="firebrick">:: TOPGEN_2:4</font></span><br/></a><div class="add"> for <font color="Olive" title="b1">T</font> being   non  <a href="struct_0.html#V2" title="STRUCT_0:attr.2">empty</a>   <a href="pre_topc.html#L1" title="PRE_TOPC:struct.1">TopStruct</a>  holds   <a href="topgen_2.html#K2" title="TOPGEN_2:func.2">Chi</a> <font color="Olive" title="b1">T</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  <a href="tarski.html#K3" title="TARSKI:func.3">union</a> <span class="p1"> { <span class="default"> <span class="p2">(<span class="default"><a href="topgen_2.html#K1" title="TOPGEN_2:func.1">Chi</a> (<font color="Olive" title="b2">x</font>,<font color="Olive" title="b1">T</font>)</span>)</span> where <font color="Olive" title="b2">x</font> is   <a href="pre_topc.html#NM2" title="PRE_TOPC:NM.2">Point</a> of <font color="Olive" title="b1">T</font> : verum </span> } </span> </div></div>
