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<b>consider </b><font color="Maroon">c<sub>1</sub></font> being  non <a href="facirc_1.html#V1" target="_self">pair</a>  <a href="hidden.html#M1">set</a> ;<br/>
<b>take </b>
<span class="p1"><a href="tarski.html#K1">{</a><span class="default"><font color="Maroon">c<sub>1</sub></font></span><a href="tarski.html#K1">}</a></span>
;<br/>

<b>thus </b><a NAME="E2:9_1_1"/>
not <span class="p1"><a href="tarski.html#K1">{</a><span class="default"><font color="Maroon">c<sub>1</sub></font></span><a href="tarski.html#K1">}</a></span> is <a href="facirc_1.html#V2" target="_self">with_pair</a>
 ;<br/>


</div>
