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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">K</font> be    <a href="subset_1.html#M2">Element</a> of  <a href="normform.html#K8" target="_self">Normal_forms_on</a> <font color="Maroon">A</font>;<br/>



<a NAME="E1:65"/>
<font color="Maroon">K</font> <a href="tarski.html#R1">c=</a> <font color="Maroon">K</font> <a href="normform.html#K10" target="_self">^</a> <font color="Maroon">K</font>
 
<b>by </b><i/>;<br/>
<b>hence </b> <a href="normform.html#K9" target="_self">mi</a> <span class="p1">(<span class="default"><font color="Maroon">K</font> <a href="normform.html#K10" target="_self">^</a> <font color="Maroon">K</font></span>)</span> = 
 <a href="normform.html#K9" target="_self">mi</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><font color="Maroon">K</font> <a href="normform.html#K10" target="_self">^</a> <font color="Maroon">K</font></span>)</span> <a href="setwiseo.html#K5">\/</a> <font color="Maroon">K</font></span>)</span>
<b>by </b><i><a class="ref" href="xboole_1.html#T12">XBOOLE_1:12</a></i>
<br/>.= 
 <a href="normform.html#K9" target="_self">mi</a> <font color="Maroon">K</font>
<b>by </b><i/>
;<br/><br/>


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