<?xml version="1.0"?>
<div><span class="kw">theorem </span><a NAME="T41"><span class="comment"><font color="firebrick">:: QUATERN2:41</font></span><br/></a><div class="add"><span class="p1">(<span class="default"><a href="struct_0.html#K4" title="STRUCT_0:func.4">0.</a> <a href="quatern2.html#K15" title="QUATERN2:func.15">R_Quaternion</a></span>)</span> <a href="quatern2.html#K16" title="QUATERN2:func.16">*'</a>  <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  <a href="struct_0.html#K4" title="STRUCT_0:func.4">0.</a> <a href="quatern2.html#K15" title="QUATERN2:func.15">R_Quaternion</a></div></div>
