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<b>deffunc </b><font color="Maroon">H<sub>1</sub></font>(   <a href="subset_1.html#M2">Element</a> of  <a href="numbers.html#K5">NAT</a> ) <b>-&gt; </b>  <a href="subset_1.html#NM2">Subset</a> of <font color="Maroon">X</font> =  <a href="kurato_2.html#K2" target="_self">meet</a> <span class="p1">(<span class="default"><font color="Maroon">F</font> <a href="kurato_2.html#K3" target="_self">^\</a> <font color="Maroon">a<sub>1</sub></font></span>)</span>;<br/>
<b>consider </b><font color="Maroon">f</font> being   <a href="prob_1.html#NM2">SetSequence</a> of <font color="Maroon">X</font><b> such that </b><br/><a NAME="E2:10_1_1"/><i><font color="Green">E43</font></i>: 
for <font color="Olive">n</font> being   <a href="subset_1.html#M2">Element</a> of  <a href="numbers.html#K5">NAT</a>  holds  <font color="Maroon">f</font> <a href="prob_1.html#K1">.</a> <font color="Olive">n</font> <a href="hidden.html#R1">=</a> <font color="Maroon">H<sub>1</sub></font>(<font color="Olive">n</font>)
 <b>from </b><i><a class="ref" href="kurato_2.html#S1" target="_self">KURATO_2:sch 1</a>();<br/></i>
<b>take </b>
 <a href="kurato_2.html#K1" target="_self">Union</a> <font color="Maroon">f</font>
;<br/>

<b>thus </b><a NAME="E3:10_1_1"/>
 ex <font color="Olive">f</font> being  <a href="prob_1.html#NM2">SetSequence</a> of <font color="Maroon">X</font> st <br/>(  <a href="kurato_2.html#K1" target="_self">Union</a> <font color="Maroon">f</font> <a href="hidden.html#R1">=</a>  <a href="kurato_2.html#K1" target="_self">Union</a> <font color="Olive">f</font> &amp; ( for <font color="Olive">n</font> being   <a href="subset_1.html#M2">Element</a> of  <a href="numbers.html#K5">NAT</a>  holds  <font color="Olive">f</font> <a href="prob_1.html#K1">.</a> <font color="Olive">n</font> <a href="hidden.html#R1">=</a>  <a href="kurato_2.html#K2" target="_self">meet</a> <span class="p1">(<span class="default"><font color="Maroon">F</font> <a href="kurato_2.html#K3" target="_self">^\</a> <font color="Olive">n</font></span>)</span> ) )
 <b>by </b><i/>;<br/>


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