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<div><span class="kw">theorem </span><a NAME="T40"><span class="comment"><font color="firebrick">:: QUATERN2:40</font></span><br/></a><div class="add"> for <font color="Olive" title="b1">z</font> being   <a href="struct_0.html#NM1" title="STRUCT_0:NM.1">Element</a> of <a href="quatern2.html#K15" title="QUATERN2:func.15">R_Quaternion</a> holds   <a href="algstr_0.html#K4" title="ALGSTR_0:func.4">-</a> <font color="Olive" title="b1">z</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <span class="p1">(<span class="default"><a href="algstr_0.html#K4" title="ALGSTR_0:func.4">-</a> <span class="p2">(<span class="default"><a href="group_1.html#K1" title="GROUP_1:func.1">1_</a> <a href="quatern2.html#K15" title="QUATERN2:func.15">R_Quaternion</a></span>)</span></span>)</span> <a href="algstr_0.html#K6" title="ALGSTR_0:func.6">*</a> <font color="Olive" title="b1">z</font></div></div>
