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<div><span class="kw">theorem </span><a NAME="T17"><span class="comment"><font color="firebrick">:: EULER_1:17</font></span><br/></a><div class="add"> <a href="euler_1.html#K1" title="EULER_1:func.1">Euler</a> 1 <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> 1 <span class="kw">by</span> <span class="lab"><a class="txt" href="euler_1.html#E21"><span class="lab"><font color="Green" title="E19">Lm3</font></span></a>, <a class="ref" href="card_1.html#T30" onmouseover="rs('card_1/T30')" onmouseout="rh()">CARD_1:30</a></span>;<br/></div></div>
