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<a NAME="E1:11_1_1"/>
 <a href="hilbert1.html#K1" target="_self">HP-WFF</a>  <a href="tarski.html#R1">c=</a> <a href="numbers.html#K5">NAT</a>  <a href="finseq_1.html#K13">*</a> 
 
<b>by </b><i><a class="ref" href="hilbert1.html#D5" target="_self">Def5</a></i>;<br/>
<b>hence </b><a NAME="E2:11_1_1"/>
 <a href="hilbert1.html#K1" target="_self">HP-WFF</a>  is <a href="fraenkel.html#V1">functional</a>
 <b>by </b><i><a class="ref" href="fraenkel.html#T17">FRAENKEL:17</a></i>;<br/>


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