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<div><span class="kw">theorem </span><a NAME="T45"><span class="comment"><font color="firebrick">:: QUATERNI:45</font></span><br/></a><div class="add"> for <font color="Olive" title="b1">z</font> being   <a href="quaterni.html#NM1" title="QUATERNI:NM.1">Quaternion</a>  st <font color="Olive" title="b1">z</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  <a href="numbers.html#K5" title="NUMBERS:func.5">0</a>  holds <br/><font color="Olive" title="b1">z</font> <a href="quaterni.html#K26" title="QUATERNI:func.26">*'</a>  <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  <a href="numbers.html#K5" title="NUMBERS:func.5">0</a> </div></div>
