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<div><span class="kw">theorem </span><span class="lab"><font color="Green" title="E9">Th9</font></span>: <a NAME="T9"><span class="comment"><font color="firebrick">:: NUMBER02:9</font></span><br/></a><div class="add"><span class="p1">(<span class="default"><a href="xcmplx_0.html#K4" title="XCMPLX_0:func.4">-</a> 1</span>)</span> <a href="int_1.html#K5" title="INT_1:func.5">mod</a> 3 <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> 2</div></div>
