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( <font color="Maroon" title="c1">f</font> is  <a href="numbers.html#K2" title="NUMBERS:func.2">COMPLEX</a>  <a href="relat_1.html#V5" title="RELAT_1:attr.5">-valued</a>  &amp;  <a href="finseq_1.html#K3" title="FINSEQ_1:func.3">len</a> <font color="Maroon" title="c1">f</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  <a href="numbers.html#K6" title="NUMBERS:func.6">0</a>  )
 
<span class="kw">by</span> <span class="lab"><a class="txt" href="afinsq_2.html#E76"><span class="lab"><font color="Green" title="E50">Lm6</font></span></a></span>;<br/>
<span class="kw">hence </span><a NAME="E2:90_1_1"/>
 <a href="afinsq_2.html#K7" title="AFINSQ_2:func.7">Sum</a> <font color="Maroon" title="c1">f</font> is  <a href="xboole_0.html#V1" title="XBOOLE_0:attr.1">empty</a> 
 <span class="kw">by</span> <span class="lab"><a class="ref" href="afinsq_2.html#D9" target="_self" title="AFINSQ_2:def.9">Def9</a>, <a class="ref" href="binop_2.html#T1" title="BINOP_2:th.1">BINOP_2:1</a></span>; <a class="txt" onclick="hs(this)" href="javascript:()"><span class="comment"><font color="Red">::  thesis: </font></span></a><span class="hide"> verum</span><br/>


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