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<b>let </b><font color="Maroon">n</font> be    <a href="subset_1.html#M2">Element</a> of  <a href="numbers.html#K5">NAT</a> ;<br/>

<a NAME="E1:24"/>
for <font color="Olive">x</font> being   <a href="hidden.html#M1">set</a>   st <font color="Olive">x</font> <a href="hidden.html#R2">in</a>  <a href="urysohn1.html#K1">dyadic</a> <font color="Maroon">n</font> holds <br/><font color="Olive">x</font> <a href="hidden.html#R2">in</a>  <a href="urysohn1.html#K2">DYADIC</a> 
 
<b>by </b><i><a class="ref" href="urysohn1.html#D4">URYSOHN1:def 4</a></i>;<br/>
<b>hence </b><a NAME="E2:24"/>
 <a href="urysohn1.html#K1">dyadic</a> <font color="Maroon">n</font> <a href="tarski.html#R1">c=</a>  <a href="urysohn1.html#K2">DYADIC</a> 
 <b>by </b><i><a class="ref" href="tarski.html#D3">TARSKI:def 3</a></i>;<br/>


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