<?xml version="1.0"?>
<div><span class="kw">theorem </span><a NAME="T3"><span class="comment"><font color="firebrick">:: POLYNOM7:3</font></span><br/></a><div class="add"> for <font color="Olive" title="b1">b</font> being   <a href="pre_poly.html#NM2" title="PRE_POLY:NM.2">bag</a> of  <a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a>  holds  <font color="Olive" title="b1">b</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  <a href="pre_poly.html#K16" title="PRE_POLY:func.16">EmptyBag</a> <a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a></div></div>
