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<b>deffunc </b><font color="Maroon">H<sub>1</sub></font>(   <a href="hidden.html#M1">set</a> ) <b>-&gt; </b> <a href="xboolean.html#V1">boolean</a>  <a href="hidden.html#M1">set</a>  = <font color="Maroon">F<sub>4</sub></font>(<font color="Maroon">a<sub>1</sub></font>,<font color="Maroon">F<sub>2</sub></font>(),<font color="Maroon">F<sub>3</sub></font>());<br/>
<a NAME="E1:91_1"/><i><font color="Green">E27</font></i>: 
for <font color="Olive">s</font> being   <a href="hidden.html#M1">set</a>   st <font color="Olive">s</font> <a href="hidden.html#R2">in</a> <font color="Maroon">F<sub>1</sub></font>() holds <br/><font color="Maroon">H<sub>1</sub></font>(<font color="Olive">s</font>) <a href="hidden.html#R2">in</a>  <a href="margrel1.html#K6">BOOLEAN</a> 
 
<b>by </b><i><a class="ref" href="margrel1.html#D13">MARGREL1:def 13</a></i>;<br/>
<b>consider </b><font color="Maroon">IT</font> being   <a href="funct_2.html#NM1">Function</a> of <font color="Maroon">F<sub>1</sub></font>(), <a href="margrel1.html#K6">BOOLEAN</a> <b> such that </b><br/><a NAME="E3:91_1"/><i><font color="Green">E28</font></i>: 
for <font color="Olive">s</font> being   <a href="hidden.html#M1">set</a>   st <font color="Olive">s</font> <a href="hidden.html#R2">in</a> <font color="Maroon">F<sub>1</sub></font>() holds <br/><font color="Maroon">IT</font> <a href="funct_1.html#K1">.</a> <font color="Olive">s</font> <a href="hidden.html#R1">=</a> <font color="Maroon">H<sub>1</sub></font>(<font color="Olive">s</font>)
 <b>from </b><i><a class="ref" href="funct_2.html#S2">FUNCT_2:sch 2</a>();<br/></i>
<b>take </b>
<font color="Maroon">IT</font>
;<br/>

<a NAME="E4:91_1"/>
<font color="Maroon">IT</font> <a href="hidden.html#R2">in</a>  <a href="modelc_1.html#K32" target="_self">ModelSP</a> <font color="Maroon">F<sub>1</sub></font>()
 
<b>by </b><i><a class="ref" href="funct_2.html#T11">FUNCT_2:11</a></i>;<br/>
<a NAME="E5:91_1"/><b>then </b>
 <a href="modelc_1.html#K33" target="_self">Fid</a> <font color="Maroon">IT</font>,<font color="Maroon">F<sub>1</sub></font>() <a href="funct_2.html#R2">=</a> <font color="Maroon">IT</font>
 
<b>by </b><i/>;<br/>
<b>hence </b><a NAME="E6:91_1"/>
( <font color="Maroon">IT</font> <a href="hidden.html#R2">in</a>  <a href="modelc_1.html#K32" target="_self">ModelSP</a> <font color="Maroon">F<sub>1</sub></font>() &amp; ( for <font color="Olive">s</font> being   <a href="hidden.html#M1">set</a>   st <font color="Olive">s</font> <a href="hidden.html#R2">in</a> <font color="Maroon">F<sub>1</sub></font>() holds <br/>( <font color="Maroon">F<sub>4</sub></font>(<font color="Olive">s</font>,<font color="Maroon">F<sub>2</sub></font>(),<font color="Maroon">F<sub>3</sub></font>()) <a href="hidden.html#R1">=</a>  <a href="margrel1.html#K8">TRUE</a>  iff <span class="p1">(<span class="default"><a href="modelc_1.html#K33" target="_self">Fid</a> <font color="Maroon">IT</font>,<font color="Maroon">F<sub>1</sub></font>()</span>)</span> <a href="funct_1.html#K1">.</a> <font color="Olive">s</font> <a href="hidden.html#R1">=</a>  <a href="margrel1.html#K8">TRUE</a>  ) ) )
 <b>by </b><i><a class="ref" href="modelc_1.html#D13" target="_self">Def13</a>, <a class="ref" href="funct_2.html#T11">FUNCT_2:11</a></i>;<br/>


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