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<b>let </b><font color="Maroon">AFV</font> be   <a href="afvect0.html#NM1">WeakAffVect</a>;<br/><b>let </b><font color="Maroon">a</font> be   <a href="struct_0.html#NM1">Element</a> of <font color="Maroon">AFV</font>;<br/><b>let </b><font color="Maroon">p</font> be   <a href="struct_0.html#NM1">Element</a> of <font color="Maroon">AFV</font>;<br/><b>let </b><font color="Maroon">a'</font> be   <a href="struct_0.html#NM1">Element</a> of <font color="Maroon">AFV</font>;<br/><b>let </b><font color="Maroon">b</font> be   <a href="struct_0.html#NM1">Element</a> of <font color="Maroon">AFV</font>;<br/><b>let </b><font color="Maroon">b'</font> be   <a href="struct_0.html#NM1">Element</a> of <font color="Maroon">AFV</font>;<br/>











<b>assume </b><a NAME="E1:30"/><i><font color="Green">E22</font></i>: 
(  <a href="afvect0.html#R2" target="_self">Mid</a> <font color="Maroon">a</font>,<font color="Maroon">p</font>,<font color="Maroon">a'</font> &amp;  <a href="afvect0.html#R2" target="_self">Mid</a> <font color="Maroon">b</font>,<font color="Maroon">p</font>,<font color="Maroon">b'</font> )
 ;<br/>

<b>consider </b><font color="Maroon">d</font> being   <a href="struct_0.html#NM1">Element</a> of <font color="Maroon">AFV</font><b> such that </b><br/><a NAME="E3:30"/><i><font color="Green">E36</font></i>: 
<font color="Maroon">b'</font>,<font color="Maroon">p</font> <a href="analoaf.html#R2">//</a> <font color="Maroon">a'</font>,<font color="Maroon">d</font>
 <b>by </b><i/>;<br/>
<a NAME="E4:30"/><i><font color="Green">E38</font></i>: 
<font color="Maroon">a'</font>,<font color="Maroon">d</font> <a href="analoaf.html#R2">//</a> <font color="Maroon">b'</font>,<font color="Maroon">p</font>
 
<b>by </b><i>, </i>;<br/>
<a NAME="E5:30"/>
<font color="Maroon">b</font>,<font color="Maroon">p</font> <a href="analoaf.html#R2">//</a> <font color="Maroon">p</font>,<font color="Maroon">b'</font>
 
<b>by </b><i>, <a class="ref" href="afvect0.html#D1" target="_self">Def1</a></i>;<br/>
<a NAME="E6:30"/><b>then </b>
<font color="Maroon">p</font>,<font color="Maroon">b</font> <a href="analoaf.html#R2">//</a> <font color="Maroon">b'</font>,<font color="Maroon">p</font>
 
<b>by </b><i/>;<br/>
<a NAME="E7:30"/><b>then </b><i><font color="Green">E40</font></i>: 
<font color="Maroon">p</font>,<font color="Maroon">b</font> <a href="analoaf.html#R2">//</a> <font color="Maroon">a'</font>,<font color="Maroon">d</font>
 
<b>by </b><i><a class="txt" href="afvect0.html#E1:30"><i><font color="Green">E22</font></i></a>, </i>;<br/>
<a NAME="E8:30"/>
<font color="Maroon">a</font>,<font color="Maroon">p</font> <a href="analoaf.html#R2">//</a> <font color="Maroon">p</font>,<font color="Maroon">a'</font>
 
<b>by </b><i>, <a class="ref" href="afvect0.html#D1" target="_self">Def1</a></i>;<br/>
<a NAME="E9:30"/><b>then </b>
<font color="Maroon">p</font>,<font color="Maroon">a</font> <a href="analoaf.html#R2">//</a> <font color="Maroon">a'</font>,<font color="Maroon">p</font>
 
<b>by </b><i/>;<br/>
<a NAME="E10:30"/><b>then </b><i><font color="Green">E41</font></i>: 
<font color="Maroon">a</font>,<font color="Maroon">b</font> <a href="analoaf.html#R2">//</a> <font color="Maroon">p</font>,<font color="Maroon">d</font>
 
<b>by </b><i>, </i>;<br/>
<a NAME="E11:30"/>
<font color="Maroon">b'</font>,<font color="Maroon">a'</font> <a href="analoaf.html#R2">//</a> <font color="Maroon">p</font>,<font color="Maroon">d</font>
 
<b>by </b><i>, </i>;<br/>
<b>hence </b><a NAME="E12:30"/>
<font color="Maroon">a</font>,<font color="Maroon">b</font> <a href="analoaf.html#R2">//</a> <font color="Maroon">b'</font>,<font color="Maroon">a'</font>
 <b>by </b><i>, </i>;<br/>


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