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<b>let </b><font color="Maroon">p</font> be    <a href="subset_1.html#M2">Element</a> of  <a href="cqc_lang.html#K7">CQC-WFF</a> ;<br/><b>let </b><font color="Maroon">q</font> be    <a href="subset_1.html#M2">Element</a> of  <a href="cqc_lang.html#K7">CQC-WFF</a> ;<br/><b>let </b><font color="Maroon">X</font> be   <a href="subset_1.html#NM2">Subset</a> of <a href="cqc_lang.html#K7">CQC-WFF</a> ;<br/>





<b>assume </b><b>that </b><br/><a NAME="E1:3"/><i><font color="Green">E39</font></i>: 
<font color="Maroon">X</font> <a href="cqc_the1.html#R3">|-</a> <font color="Maroon">p</font>
 <b>and </b><br/><a NAME="E2:3"/><i><font color="Green">E42</font></i>: 
<span class="p1"><a href="domain_1.html#K6">{</a><span class="default"><font color="Maroon">p</font></span><a href="domain_1.html#K6">}</a></span> <a href="cqc_the1.html#R3">|-</a> <font color="Maroon">q</font>
 ;<br/>

<a NAME="E3:3"/>
<font color="Maroon">p</font> <a href="hidden.html#R2">in</a>  <a href="cqc_the1.html#K1">Cn</a> <font color="Maroon">X</font>
 
<b>by </b><i>, <a class="ref" href="cqc_the1.html#D9">CQC_THE1:def 9</a></i>;<br/>
<a NAME="E4:3"/><b>then </b>
<span class="p1"><a href="domain_1.html#K6">{</a><span class="default"><font color="Maroon">p</font></span><a href="domain_1.html#K6">}</a></span> <a href="tarski.html#R1">c=</a>  <a href="cqc_the1.html#K1">Cn</a> <font color="Maroon">X</font>
 
<b>by </b><i><a class="ref" href="zfmisc_1.html#T37">ZFMISC_1:37</a></i>;<br/>
<a NAME="E5:3"/><b>then </b><i><font color="Green">E43</font></i>: 
 <a href="cqc_the1.html#K1">Cn</a> <span class="p1"><a href="domain_1.html#K6">{</a><span class="default"><font color="Maroon">p</font></span><a href="domain_1.html#K6">}</a></span> <a href="tarski.html#R1">c=</a>  <a href="cqc_the1.html#K1">Cn</a> <font color="Maroon">X</font>
 
<b>by </b><i/>;<br/>
<a NAME="E6:3"/>
<font color="Maroon">q</font> <a href="hidden.html#R2">in</a>  <a href="cqc_the1.html#K1">Cn</a> <span class="p1"><a href="domain_1.html#K6">{</a><span class="default"><font color="Maroon">p</font></span><a href="domain_1.html#K6">}</a></span>
 
<b>by </b><i>, <a class="ref" href="cqc_the1.html#D9">CQC_THE1:def 9</a></i>;<br/>
<b>hence </b><a NAME="E7:3"/>
<font color="Maroon">X</font> <a href="cqc_the1.html#R3">|-</a> <font color="Maroon">q</font>
 <b>by </b><i>, <a class="ref" href="cqc_the1.html#D9">CQC_THE1:def 9</a></i>;<br/>


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