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<a NAME="E1:35_1_1"/>
 <a href="xboole_0.html#K1">{}</a>  is   <a href="partfun1.html#NM1">PartFunc</a> of  <a href="numbers.html#K5">NAT</a> ,<font color="Maroon">c<sub>1</sub></font>
 
<b>by </b><i><a class="ref" href="partfun1.html#T56">PARTFUN1:56</a></i>;<br/>
<b>hence </b><a NAME="E2:35_1_1"/>
ex <font color="Olive">b<sub>1</sub></font> being  <a href="partfun1.html#NM1">PartFunc</a> of  <a href="numbers.html#K5">NAT</a> ,<font color="Maroon">c<sub>1</sub></font> st <font color="Olive">b<sub>1</sub></font> is <a href="finseq_1.html#V1" target="_self">FinSequence-like</a>
 ;<br/>


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