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<b>let </b><font color="Maroon">A</font> be    <a href="hidden.html#M1">set</a> ;<br/><b>let </b><font color="Maroon">x</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="E1:23"/>
<font color="Maroon">x</font> <a href="hidden.html#R2">in</a>  <a href="finsub_1.html#K5" target="_self">Fin</a> <font color="Maroon">A</font>
 ;<br/>

<a NAME="E2:23"/><b>then </b>
<font color="Maroon">x</font> <a href="tarski.html#R1">c=</a> <font color="Maroon">A</font>
 
<b>by </b><i><a class="ref" href="finsub_1.html#D3" target="_self">Def3</a></i>;<br/>
<b>hence </b><a NAME="E3:23"/>
<font color="Maroon">x</font> <a href="hidden.html#R2">in</a>  <a href="zfmisc_1.html#K1">bool</a> <font color="Maroon">A</font>
 ;<br/>


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