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<b>let </b><font color="Maroon">k</font> be    <a href="subset_1.html#M1">Element</a> of  <a href="numbers.html#K5">NAT</a> ;<br/><b>let </b><font color="Maroon">e</font> be    <a href="hidden.html#M1">set</a> ; <i><font color="Red">:: according to </font></i><a class="ref" href="tarski.html#D3">TARSKI:def 3</a><br/>



<b>assume </b><a NAME="E1:15"/>
<font color="Maroon">e</font> <a href="hidden.html#R2">in</a> <font color="Maroon">k</font> <a href="radix_3.html#K2" target="_self">-SD_Sub</a> 
 ;<br/>

<a NAME="E2:15"/><b>then </b>
<font color="Maroon">e</font> is   <a href="int_1.html#NM1">Integer</a>
 
<b>by </b><i/>;<br/>
<b>hence </b><a NAME="E3:15"/>
<font color="Maroon">e</font> <a href="hidden.html#R2">in</a>  <a href="mesfunc1.html#K2">INT</a> 
 <b>by </b><i><a class="ref" href="int_1.html#D2">INT_1:def 2</a></i>;<br/>


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