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<b>let </b><font color="Maroon">A</font> be    <a href="hidden.html#M1">set</a> , <font color="Maroon">B</font> be    <a href="hidden.html#M1">set</a> , <font color="Maroon">C</font> be    <a href="hidden.html#M1">set</a> , <font color="Maroon">D</font> be    <a href="hidden.html#M1">set</a> , <font color="Maroon">E</font> be    <a href="hidden.html#M1">set</a> , <font color="Maroon">F</font> be    <a href="hidden.html#M1">set</a> , <font color="Maroon">J</font> be    <a href="hidden.html#M1">set</a> , <font color="Maroon">M</font> be    <a href="hidden.html#M1">set</a> , <font color="Maroon">N</font> be    <a href="hidden.html#M1">set</a> ;<br/><b>let </b><font color="Maroon">h</font> be   <a href="funct_1.html#NM1">Function</a>;<br/><b>let </b><font color="Maroon">A'</font> be    <a href="hidden.html#M1">set</a> , <font color="Maroon">B'</font> be    <a href="hidden.html#M1">set</a> , <font color="Maroon">C'</font> be    <a href="hidden.html#M1">set</a> , <font color="Maroon">D'</font> be    <a href="hidden.html#M1">set</a> , <font color="Maroon">E'</font> be    <a href="hidden.html#M1">set</a> , <font color="Maroon">F'</font> be    <a href="hidden.html#M1">set</a> , <font color="Maroon">J'</font> be    <a href="hidden.html#M1">set</a> , <font color="Maroon">M'</font> be    <a href="hidden.html#M1">set</a> , <font color="Maroon">N'</font> be    <a href="hidden.html#M1">set</a> ;<br/>





<b>assume </b><a NAME="E1:38"/><i><font color="Green">E28</font></i>: 
<font color="Maroon">h</font> <a href="hidden.html#R1">=</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><span class="p3">(<span class="default"><span class="p4">(<span class="default"><span class="p5">(<span class="default"><span class="p0">(<span class="default"><span class="p1">(<span class="default"><span class="p2">(<span class="default"><font color="Maroon">B</font> <a href="cqc_lang.html#K3">.--&gt;</a> <font color="Maroon">B'</font></span>)</span> <a href="funct_4.html#K1">+*</a> <span class="p2">(<span class="default"><font color="Maroon">C</font> <a href="cqc_lang.html#K3">.--&gt;</a> <font color="Maroon">C'</font></span>)</span></span>)</span> <a href="funct_4.html#K1">+*</a> <span class="p1">(<span class="default"><font color="Maroon">D</font> <a href="cqc_lang.html#K3">.--&gt;</a> <font color="Maroon">D'</font></span>)</span></span>)</span> <a href="funct_4.html#K1">+*</a> <span class="p0">(<span class="default"><font color="Maroon">E</font> <a href="cqc_lang.html#K3">.--&gt;</a> <font color="Maroon">E'</font></span>)</span></span>)</span> <a href="funct_4.html#K1">+*</a> <span class="p5">(<span class="default"><font color="Maroon">F</font> <a href="cqc_lang.html#K3">.--&gt;</a> <font color="Maroon">F'</font></span>)</span></span>)</span> <a href="funct_4.html#K1">+*</a> <span class="p4">(<span class="default"><font color="Maroon">J</font> <a href="cqc_lang.html#K3">.--&gt;</a> <font color="Maroon">J'</font></span>)</span></span>)</span> <a href="funct_4.html#K1">+*</a> <span class="p3">(<span class="default"><font color="Maroon">M</font> <a href="cqc_lang.html#K3">.--&gt;</a> <font color="Maroon">M'</font></span>)</span></span>)</span> <a href="funct_4.html#K1">+*</a> <span class="p2">(<span class="default"><font color="Maroon">N</font> <a href="cqc_lang.html#K3">.--&gt;</a> <font color="Maroon">N'</font></span>)</span></span>)</span> <a href="funct_4.html#K1">+*</a> <span class="p1">(<span class="default"><font color="Maroon">A</font> <a href="cqc_lang.html#K3">.--&gt;</a> <font color="Maroon">A'</font></span>)</span>
 ;<br/>

<i><font color="Green">E29</font></i>:  <a href="relat_1.html#K1">dom</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><span class="p3">(<span class="default"><span class="p4">(<span class="default"><span class="p5">(<span class="default"><span class="p0">(<span class="default"><span class="p1">(<span class="default"><span class="p2">(<span class="default"><font color="Maroon">B</font> <a href="cqc_lang.html#K3">.--&gt;</a> <font color="Maroon">B'</font></span>)</span> <a href="funct_4.html#K1">+*</a> <span class="p2">(<span class="default"><font color="Maroon">C</font> <a href="cqc_lang.html#K3">.--&gt;</a> <font color="Maroon">C'</font></span>)</span></span>)</span> <a href="funct_4.html#K1">+*</a> <span class="p1">(<span class="default"><font color="Maroon">D</font> <a href="cqc_lang.html#K3">.--&gt;</a> <font color="Maroon">D'</font></span>)</span></span>)</span> <a href="funct_4.html#K1">+*</a> <span class="p0">(<span class="default"><font color="Maroon">E</font> <a href="cqc_lang.html#K3">.--&gt;</a> <font color="Maroon">E'</font></span>)</span></span>)</span> <a href="funct_4.html#K1">+*</a> <span class="p5">(<span class="default"><font color="Maroon">F</font> <a href="cqc_lang.html#K3">.--&gt;</a> <font color="Maroon">F'</font></span>)</span></span>)</span> <a href="funct_4.html#K1">+*</a> <span class="p4">(<span class="default"><font color="Maroon">J</font> <a href="cqc_lang.html#K3">.--&gt;</a> <font color="Maroon">J'</font></span>)</span></span>)</span> <a href="funct_4.html#K1">+*</a> <span class="p3">(<span class="default"><font color="Maroon">M</font> <a href="cqc_lang.html#K3">.--&gt;</a> <font color="Maroon">M'</font></span>)</span></span>)</span> <a href="funct_4.html#K1">+*</a> <span class="p2">(<span class="default"><font color="Maroon">N</font> <a href="cqc_lang.html#K3">.--&gt;</a> <font color="Maroon">N'</font></span>)</span></span>)</span> = 
<span class="p1"><a href="enumset1.html#K6">{</a><span class="default"><font color="Maroon">N</font>,<font color="Maroon">B</font>,<font color="Maroon">C</font>,<font color="Maroon">D</font>,<font color="Maroon">E</font>,<font color="Maroon">F</font>,<font color="Maroon">J</font>,<font color="Maroon">M</font></span><a href="enumset1.html#K6">}</a></span>
<b>by </b><i/>
<br/>.= 
<span class="p1"><a href="tarski.html#K1">{</a><span class="default"><font color="Maroon">N</font></span><a href="tarski.html#K1">}</a></span> <a href="xboole_0.html#K2">\/</a> <span class="p1"><a href="enumset1.html#K5">{</a><span class="default"><font color="Maroon">B</font>,<font color="Maroon">C</font>,<font color="Maroon">D</font>,<font color="Maroon">E</font>,<font color="Maroon">F</font>,<font color="Maroon">J</font>,<font color="Maroon">M</font></span><a href="enumset1.html#K5">}</a></span>
<b>by </b><i><a class="ref" href="enumset1.html#T62">ENUMSET1:62</a></i>
<br/>.= 
<span class="p1"><a href="enumset1.html#K6">{</a><span class="default"><font color="Maroon">B</font>,<font color="Maroon">C</font>,<font color="Maroon">D</font>,<font color="Maroon">E</font>,<font color="Maroon">F</font>,<font color="Maroon">J</font>,<font color="Maroon">M</font>,<font color="Maroon">N</font></span><a href="enumset1.html#K6">}</a></span>
<b>by </b><i><a class="ref" href="enumset1.html#T68">ENUMSET1:68</a></i>
;<br/>
<a NAME="E3:38"/>
 <a href="relat_1.html#K1">dom</a> <span class="p1">(<span class="default"><font color="Maroon">A</font> <a href="cqc_lang.html#K3">.--&gt;</a> <font color="Maroon">A'</font></span>)</span> <a href="hidden.html#R1">=</a> <span class="p1"><a href="tarski.html#K1">{</a><span class="default"><font color="Maroon">A</font></span><a href="tarski.html#K1">}</a></span>
 
<b>by </b><i><a class="ref" href="cqc_lang.html#T5">CQC_LANG:5</a></i>;<br/>
<b>then </b> <a href="relat_1.html#K1">dom</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><span class="p3">(<span class="default"><span class="p4">(<span class="default"><span class="p5">(<span class="default"><span class="p0">(<span class="default"><span class="p1">(<span class="default"><span class="p2">(<span class="default"><span class="p3">(<span class="default"><font color="Maroon">B</font> <a href="cqc_lang.html#K3">.--&gt;</a> <font color="Maroon">B'</font></span>)</span> <a href="funct_4.html#K1">+*</a> <span class="p3">(<span class="default"><font color="Maroon">C</font> <a href="cqc_lang.html#K3">.--&gt;</a> <font color="Maroon">C'</font></span>)</span></span>)</span> <a href="funct_4.html#K1">+*</a> <span class="p2">(<span class="default"><font color="Maroon">D</font> <a href="cqc_lang.html#K3">.--&gt;</a> <font color="Maroon">D'</font></span>)</span></span>)</span> <a href="funct_4.html#K1">+*</a> <span class="p1">(<span class="default"><font color="Maroon">E</font> <a href="cqc_lang.html#K3">.--&gt;</a> <font color="Maroon">E'</font></span>)</span></span>)</span> <a href="funct_4.html#K1">+*</a> <span class="p0">(<span class="default"><font color="Maroon">F</font> <a href="cqc_lang.html#K3">.--&gt;</a> <font color="Maroon">F'</font></span>)</span></span>)</span> <a href="funct_4.html#K1">+*</a> <span class="p5">(<span class="default"><font color="Maroon">J</font> <a href="cqc_lang.html#K3">.--&gt;</a> <font color="Maroon">J'</font></span>)</span></span>)</span> <a href="funct_4.html#K1">+*</a> <span class="p4">(<span class="default"><font color="Maroon">M</font> <a href="cqc_lang.html#K3">.--&gt;</a> <font color="Maroon">M'</font></span>)</span></span>)</span> <a href="funct_4.html#K1">+*</a> <span class="p3">(<span class="default"><font color="Maroon">N</font> <a href="cqc_lang.html#K3">.--&gt;</a> <font color="Maroon">N'</font></span>)</span></span>)</span> <a href="funct_4.html#K1">+*</a> <span class="p2">(<span class="default"><font color="Maroon">A</font> <a href="cqc_lang.html#K3">.--&gt;</a> <font color="Maroon">A'</font></span>)</span></span>)</span> = 
<span class="p1"><a href="enumset1.html#K6">{</a><span class="default"><font color="Maroon">B</font>,<font color="Maroon">C</font>,<font color="Maroon">D</font>,<font color="Maroon">E</font>,<font color="Maroon">F</font>,<font color="Maroon">J</font>,<font color="Maroon">M</font>,<font color="Maroon">N</font></span><a href="enumset1.html#K6">}</a></span> <a href="xboole_0.html#K2">\/</a> <span class="p1"><a href="tarski.html#K1">{</a><span class="default"><font color="Maroon">A</font></span><a href="tarski.html#K1">}</a></span>
<b>by </b><i>, <a class="ref" href="funct_4.html#D1">FUNCT_4:def 1</a></i>
<br/>.= 
<span class="p1"><a href="enumset1.html#K7">{</a><span class="default"><font color="Maroon">A</font>,<font color="Maroon">B</font>,<font color="Maroon">C</font>,<font color="Maroon">D</font>,<font color="Maroon">E</font>,<font color="Maroon">F</font>,<font color="Maroon">J</font>,<font color="Maroon">M</font>,<font color="Maroon">N</font></span><a href="enumset1.html#K7">}</a></span>
<b>by </b><i><a class="ref" href="enumset1.html#T127">ENUMSET1:127</a></i>
;<br/>
<b>hence </b><a NAME="E5:38"/>
 <a href="relat_1.html#K1">dom</a> <font color="Maroon">h</font> <a href="hidden.html#R1">=</a> <span class="p1"><a href="enumset1.html#K7">{</a><span class="default"><font color="Maroon">A</font>,<font color="Maroon">B</font>,<font color="Maroon">C</font>,<font color="Maroon">D</font>,<font color="Maroon">E</font>,<font color="Maroon">F</font>,<font color="Maroon">J</font>,<font color="Maroon">M</font>,<font color="Maroon">N</font></span><a href="enumset1.html#K7">}</a></span>
 <b>by </b><i/>;<br/>


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