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





<div><i><font color="Green">E22</font></i>: <a class="txt" onclick="hs2(this)" href="javascript:()" title="23_1"><b>now </b></a><div class="add"><b>assume </b><a NAME="E1:23_1"/>
 <a href="afvect0.html#R2" target="_self">Mid</a> <font color="Maroon">a</font>,<font color="Maroon">b</font>,<font color="Maroon">a</font>
 ;<br/><a NAME="E2:23_1"/><b>then </b>
<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><a class="ref" href="afvect0.html#D1" target="_self">Def1</a></i>;<br/><b>hence </b><a NAME="E3:23_1"/>
( <font color="Maroon">a</font> <a href="hidden.html#R1">=</a> <font color="Maroon">b</font> or  <a href="afvect0.html#R1" target="_self">MDist</a> <font color="Maroon">a</font>,<font color="Maroon">b</font> )
 <b>by </b><i/>;<br/></div><b>end;</b></div>
<div><i><font color="Green">E36</font></i>: <a class="txt" onclick="hs2(this)" href="javascript:()" title="23_2"><b>now </b></a><div class="add"><b>assume </b><a NAME="E1:23_2"/>
<font color="Maroon">a</font> <a href="hidden.html#R1">=</a> <font color="Maroon">b</font>
 ;<br/><a NAME="E2:23_2"/><b>then </b>
<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/>;<br/><b>hence </b><a NAME="E3:23_2"/>
 <a href="afvect0.html#R2" target="_self">Mid</a> <font color="Maroon">a</font>,<font color="Maroon">b</font>,<font color="Maroon">a</font>
 <b>by </b><i><a class="ref" href="afvect0.html#D1" target="_self">Def1</a></i>;<br/></div><b>end;</b></div>
<div><a class="txt" onclick="hs2(this)" href="javascript:()" title="23_3"><b>now </b></a><div class="add"><b>assume </b><a NAME="E1:23_3"/>
 <a href="afvect0.html#R1" target="_self">MDist</a> <font color="Maroon">a</font>,<font color="Maroon">b</font>
 ;<br/><a NAME="E2:23_3"/><b>then </b>
<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/>;<br/><b>hence </b><a NAME="E3:23_3"/>
 <a href="afvect0.html#R2" target="_self">Mid</a> <font color="Maroon">a</font>,<font color="Maroon">b</font>,<font color="Maroon">a</font>
 <b>by </b><i><a class="ref" href="afvect0.html#D1" target="_self">Def1</a></i>;<br/></div><b>end;</b></div>
<b>hence </b><a NAME="E4:23"/>
(  <a href="afvect0.html#R2" target="_self">Mid</a> <font color="Maroon">a</font>,<font color="Maroon">b</font>,<font color="Maroon">a</font> iff ( <font color="Maroon">a</font> <a href="hidden.html#R1">=</a> <font color="Maroon">b</font> or  <a href="afvect0.html#R1" target="_self">MDist</a> <font color="Maroon">a</font>,<font color="Maroon">b</font> ) )
 <b>by </b><i>, </i>;<br/>


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