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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">o</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 <span class="p1">(<span class="default"><a href="afvect0.html#K5" target="_self">GroupVect</a> <font color="Maroon">AFV</font>,<font color="Maroon">o</font></span>)</span>;<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>assume </b><a NAME="E1:61"/><i><font color="Green">E22</font></i>: 
<font color="Maroon">a</font> <a href="hidden.html#R1">=</a> <font color="Maroon">a'</font>
 ;<br/>

<b>reconsider </b><font color="Maroon">aa</font> = <span class="p1">(<span class="default"><a href="afvect0.html#K4" target="_self">Pcom</a> <font color="Maroon">o</font></span>)</span> <a href="funct_2.html#K3">.</a> <font color="Maroon">a'</font> as   <a href="struct_0.html#NM1">Element</a> of <span class="p1">(<span class="default"><a href="afvect0.html#K5" target="_self">GroupVect</a> <font color="Maroon">AFV</font>,<font color="Maroon">o</font></span>)</span> ;<br/>
<a NAME="E3:61"/><i><font color="Green">E36</font></i>: 
 <a href="afvect0.html#NK3" target="_self">Pcom</a> <font color="Maroon">o</font>,<font color="Maroon">o</font> <a href="hidden.html#R1">=</a> <font color="Maroon">o</font>
 
<b>by </b><i/>;<br/>
<a NAME="E4:61"/>
<font color="Maroon">o</font>,<font color="Maroon">a'</font> <a href="analoaf.html#R2">//</a>  <a href="afvect0.html#NK3" target="_self">Pcom</a> <font color="Maroon">o</font>,<font color="Maroon">a'</font>, <a href="afvect0.html#NK3" target="_self">Pcom</a> <font color="Maroon">o</font>,<font color="Maroon">o</font>
 
<b>by </b><i/>;<br/>
<a NAME="E5:61"/><b>then </b><i><font color="Green">E38</font></i>: 
 <a href="afvect0.html#K2" target="_self">Padd</a> <font color="Maroon">o</font>,<font color="Maroon">a'</font>,<span class="p1">(<span class="default"><a href="afvect0.html#NK3" target="_self">Pcom</a> <font color="Maroon">o</font>,<font color="Maroon">a'</font></span>)</span> <a href="hidden.html#R1">=</a> <font color="Maroon">o</font>
 
<b>by </b><i>, <a class="ref" href="afvect0.html#T2" target="_self">Th2</a></i>;<br/>
<font color="Maroon">a</font> <a href="rlvect_1.html#K4">+</a> <font color="Maroon">aa</font> = 
<span class="p1">(<span class="default"><a href="afvect0.html#K3" target="_self">Padd</a> <font color="Maroon">o</font></span>)</span> <a href="binop_1.html#K1">.</a> <font color="Maroon">a</font>,<span class="p1">(<span class="default"><a href="afvect0.html#NK3" target="_self">Pcom</a> <font color="Maroon">o</font>,<font color="Maroon">a'</font></span>)</span>
<b>by </b><i><a class="ref" href="afvect0.html#T6" target="_self">Th6</a></i>
<br/>.= 
 <a href="rlvect_1.html#K1">0.</a> <span class="p1">(<span class="default"><a href="afvect0.html#K5" target="_self">GroupVect</a> <font color="Maroon">AFV</font>,<font color="Maroon">o</font></span>)</span>
<b>by </b><i>, , <a class="ref" href="afvect0.html#T5" target="_self">Th5</a></i>
;<br/>
<b>hence </b><a NAME="E7:61"/>
 <a href="rlvect_1.html#K5">-</a> <font color="Maroon">a</font> <a href="hidden.html#R1">=</a> <span class="p1">(<span class="default"><a href="afvect0.html#K4" target="_self">Pcom</a> <font color="Maroon">o</font></span>)</span> <a href="funct_2.html#K3">.</a> <font color="Maroon">a'</font>
 <b>by </b><i><a class="ref" href="rlvect_1.html#D10">RLVECT_1:def 10</a></i>;<br/>


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