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<b>let </b><font color="Maroon">c<sub>1</sub></font> be    <a href="hidden.html#M1">set</a> ;<br/><b>let </b><font color="Maroon">c<sub>2</sub></font> be   <a href="prob_1.html#NM2">SetSequence</a> of <font color="Maroon">c<sub>1</sub></font>;<br/>



<b>thus </b> <a href="kurato_2.html#K1">Union</a> <span class="p1">(<span class="default"><a href="prob_3.html#K3" target="_self">Partial_Diff_Union</a> <font color="Maroon">c<sub>2</sub></font></span>)</span> = 
 <a href="kurato_2.html#K1">Union</a> <span class="p1">(<span class="default"><a href="prob_3.html#K2" target="_self">Partial_Union</a> <span class="p2">(<span class="default"><a href="prob_3.html#K3" target="_self">Partial_Diff_Union</a> <font color="Maroon">c<sub>2</sub></font></span>)</span></span>)</span>
<b>by </b><i><a class="ref" href="prob_3.html#T17" target="_self">Th17</a></i>
<br/>.= 
 <a href="kurato_2.html#K1">Union</a> <span class="p1">(<span class="default"><a href="prob_3.html#K2" target="_self">Partial_Union</a> <font color="Maroon">c<sub>2</sub></font></span>)</span>
<b>by </b><i><a class="ref" href="prob_3.html#T22" target="_self">Th22</a></i>
<br/>.= 
 <a href="kurato_2.html#K1">Union</a> <font color="Maroon">c<sub>2</sub></font>
<b>by </b><i><a class="ref" href="prob_3.html#T17" target="_self">Th17</a></i>
;<br/>


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