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<b>let </b><font color="Maroon" title="c1">F</font>, <font color="Maroon" title="c2">G</font> be    <a href="subset_1.html#M1" title="SUBSET_1:mode.1">Element</a> of  <a href="qc_lang1.html#K8" title="QC_LANG1:func.8">QC-WFF</a> ;<br/>



<b>thus </b> <a href="qc_lang2.html#K12" title="QC_LANG2:func.12">the_antecedent_of</a> <span class="p1">(<span class="default"><font color="Maroon" title="c1">F</font> <a href="qc_lang2.html#K2" title="QC_LANG2:func.2">=&gt;</a> <font color="Maroon" title="c2">G</font></span>)</span> = 
 <a href="qc_lang1.html#K18" title="QC_LANG1:func.18">the_left_argument_of</a> <span class="p1">(<span class="default"><font color="Maroon" title="c1">F</font> <a href="qc_lang1.html#K13" title="QC_LANG1:func.13">'&amp;'</a> <span class="p2">(<span class="default"><a href="qc_lang1.html#K12" title="QC_LANG1:func.12">'not'</a> <font color="Maroon" title="c2">G</font></span>)</span></span>)</span>
<b>by </b><i><a class="ref" href="qc_lang2.html#T2" target="_self" title="QC_LANG2:th.2">Th2</a></i>
<br/>.= 
<font color="Maroon" title="c1">F</font>
<b>by </b><i><a class="ref" href="qc_lang2.html#T5" target="_self" title="QC_LANG2:th.5">Th5</a></i>
;<br/>

<b>thus </b> <a href="qc_lang2.html#NK13" title="QC_LANG2:NK.13">the_consequent_of</a> <span class="p1">(<span class="default"><font color="Maroon" title="c1">F</font> <a href="qc_lang2.html#K2" title="QC_LANG2:func.2">=&gt;</a> <font color="Maroon" title="c2">G</font></span>)</span> = 
 <a href="qc_lang1.html#K17" title="QC_LANG1:func.17">the_argument_of</a> <span class="p1">(<span class="default"><a href="qc_lang1.html#K19" title="QC_LANG1:func.19">the_right_argument_of</a> <span class="p2">(<span class="default"><font color="Maroon" title="c1">F</font> <a href="qc_lang1.html#K13" title="QC_LANG1:func.13">'&amp;'</a> <span class="p3">(<span class="default"><a href="qc_lang1.html#K12" title="QC_LANG1:func.12">'not'</a> <font color="Maroon" title="c2">G</font></span>)</span></span>)</span></span>)</span>
<b>by </b><i><a class="ref" href="qc_lang2.html#T2" target="_self" title="QC_LANG2:th.2">Th2</a></i>
<br/>.= 
 <a href="qc_lang1.html#K17" title="QC_LANG1:func.17">the_argument_of</a> <span class="p1">(<span class="default"><a href="qc_lang1.html#K12" title="QC_LANG1:func.12">'not'</a> <font color="Maroon" title="c2">G</font></span>)</span>
<b>by </b><i><a class="ref" href="qc_lang2.html#T5" target="_self" title="QC_LANG2:th.5">Th5</a></i>
<br/>.= 
<font color="Maroon" title="c2">G</font>
<b>by </b><i><a class="ref" href="qc_lang2.html#T2" target="_self" title="QC_LANG2:th.2">Th2</a></i>
;<br/>

<b>thus </b><a NAME="E3:28"/>
 <a href="qc_lang1.html#K17" title="QC_LANG1:func.17">the_argument_of</a> <span class="p1">(<span class="default"><font color="Maroon" title="c1">F</font> <a href="qc_lang2.html#K2" title="QC_LANG2:func.2">=&gt;</a> <font color="Maroon" title="c2">G</font></span>)</span> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <font color="Maroon" title="c1">F</font> <a href="qc_lang1.html#K13" title="QC_LANG1:func.13">'&amp;'</a> <span class="p1">(<span class="default"><a href="qc_lang1.html#K12" title="QC_LANG1:func.12">'not'</a> <font color="Maroon" title="c2">G</font></span>)</span>
 <b>by </b><i><a class="ref" href="qc_lang2.html#T2" target="_self" title="QC_LANG2:th.2">Th2</a></i>;<br/>


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