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<div><span class="kw">theorem </span><a NAME="T55"><span class="comment"><font color="firebrick">:: QUATERN2:55</font></span><br/></a><div class="add"> for <font color="Olive" title="b1">c1</font>, <font color="Olive" title="b2">c2</font> being   <a href="quaterni.html#NM1" title="QUATERNI:NM.1">Quaternion</a> holds  <span class="p1">(<span class="default"><a href="quaterni.html#K23" title="QUATERNI:func.23">-</a> <font color="Olive" title="b1">c1</font></span>)</span> <a href="quatern2.html#K17" title="QUATERN2:func.17">.|.</a> <font color="Olive" title="b2">c2</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  <a href="quaterni.html#K23" title="QUATERNI:func.23">-</a> <span class="p1">(<span class="default"><font color="Olive" title="b1">c1</font> <a href="quatern2.html#K17" title="QUATERN2:func.17">.|.</a> <font color="Olive" title="b2">c2</font></span>)</span> <span class="kw">by</span> <span class="lab"><a class="ref" href="quatern2.html#T20" target="_self" onmouseover="rs('quatern2/T20')" onmouseout="rh()">Th20</a></span>;<br/></div></div>
