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<b>take </b>
 <a href="xboole_0.html#K1">{}</a> 
;<br/>

<b>take </b>
 <a href="finseq_1.html#K3" target="_self">len</a> <a href="xboole_0.html#K1">{}</a> 
; <i><font color="Red">:: according to </font></i><a class="ref" href="finseq_1.html#D12" target="_self">FINSEQ_1:def 12</a><br/>

<b>thus </b><a NAME="E1:88_1_1"/>
 <a href="relat_1.html#K1">dom</a> <a href="xboole_0.html#K1">{}</a>  <a href="tarski.html#R1">c=</a>  <a href="finseq_1.html#K2" target="_self">Seg</a> <span class="p1">(<span class="default"><a href="finseq_1.html#K3" target="_self">len</a> <a href="xboole_0.html#K1">{}</a> </span>)</span>
 <b>by </b><i><a class="ref" href="finseq_1.html#D3" target="_self">Def3</a></i>;<br/>


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