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<div><span class="kw">theorem </span><a NAME="T10"><span class="comment"><font color="firebrick">:: EUCLID_8:10</font></span><br/></a><div class="add"><span class="p1"><a href="rvsum_1.html#K22" title="RVSUM_1:func.22">|(</a><span class="default"><a href="euclid_8.html#K2" title="EUCLID_8:func.2">&lt;e1&gt;</a>,<a href="euclid_8.html#K2" title="EUCLID_8:func.2">&lt;e1&gt;</a></span><a href="rvsum_1.html#K22" title="RVSUM_1:func.22">)|</a></span> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> 1</div></div>
