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<a NAME="E1:20"/>
2 <a href="newton.html#K5" title="NEWTON:func.5">!</a>  <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> 1 <a href="nat_1.html#K4" title="NAT_1:func.4">*</a> 2
 
<span class="kw">by</span> <span class="lab"><a class="ref" href="finseq_2.html#T52" title="FINSEQ_2:th.52">FINSEQ_2:52</a>, <a class="ref" href="rvsum_1.html#T99" title="RVSUM_1:th.99">RVSUM_1:99</a></span>;<br/>
<span class="kw">hence </span><a NAME="E2:20"/>
2 <a href="newton.html#K5" title="NEWTON:func.5">!</a>  <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> 2
 ; <a class="txt" onclick="hs(this)" href="javascript:()"><span class="comment"><font color="firebrick">::  thesis: </font></span></a><span class="hide"> verum</span><br/>


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