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<div><span class="kw">theorem </span><a NAME="T47"><span class="comment"><font color="firebrick">:: QUATERNI:47</font></span><br/></a><div class="add"><a href="quaterni.html#K17" title="QUATERNI:func.17">1q</a> <a href="quaterni.html#K26" title="QUATERNI:func.26">*'</a>  <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  <a href="quaterni.html#K17" title="QUATERNI:func.17">1q</a> </div></div>
