<?xml version="1.0"?>
<div><span class="kw">theorem </span><a NAME="T18"><span class="comment"><font color="firebrick">:: CARD_2:18</font></span><br/></a><div class="add"> for <font color="Olive" title="b1">M</font> being   <a href="card_1.html#NM1" title="CARD_1:NM.1">Cardinal</a> holds  <font color="Olive" title="b1">M</font> <a href="card_2.html#K1" title="CARD_2:func.1">+`</a> <a href="numbers.html#K5" title="NUMBERS:func.5">0</a> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <font color="Olive" title="b1">M</font></div></div>
