<?xml version="1.0"?>
<div>:: <span class="kw">deftheorem </span>   defines <a href="quaterni.html#K4" title="QUATERNI:func.4">&lt;k&gt;</a> <a onclick="hs(this)" href="javascript:()">QUATERNI:def 4 : <br/></a><span> <a href="quaterni.html#K4" title="QUATERNI:func.4">&lt;k&gt;</a>  <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> (<a href="numbers.html#K5" title="NUMBERS:func.5">0</a>,1,2,3) <a href="quaterni.html#K2" title="QUATERNI:func.2">--&gt;</a> (<a href="numbers.html#K5" title="NUMBERS:func.5">0</a>,<a href="numbers.html#K5" title="NUMBERS:func.5">0</a>,<a href="numbers.html#K5" title="NUMBERS:func.5">0</a>,1);<br/></span></div>
