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<b>let </b><font color="Maroon">M</font> be   <a href="midsp_1.html#NM1">MidSp</a>;<br/><b>let </b><font color="Maroon">u</font> be    <a href="midsp_1.html#M1" target="_self">Vector</a> of <font color="Maroon">M</font>;<br/>



<b>consider </b><font color="Maroon">a</font> being   <a href="struct_0.html#NM1">Element</a> of <font color="Maroon">M</font>;<br/>
<b>consider </b><font color="Maroon">b</font> being   <a href="struct_0.html#NM1">Element</a> of <font color="Maroon">M</font><b> such that </b><br/><a NAME="E3:56"/><i><font color="Green">E37</font></i>: 
<font color="Maroon">u</font> <a href="hidden.html#R1">=</a>  <a href="midsp_1.html#K11" target="_self">vect</a> <font color="Maroon">a</font>,<font color="Maroon">b</font>
 <b>by </b><i/>;<br/>
<font color="Maroon">u</font> <a href="midsp_1.html#K10" target="_self">+</a> <span class="p1">(<span class="default"><a href="midsp_1.html#K11" target="_self">vect</a> <font color="Maroon">b</font>,<font color="Maroon">a</font></span>)</span> = 
 <a href="midsp_1.html#K11" target="_self">vect</a> <font color="Maroon">a</font>,<font color="Maroon">a</font>
<b>by </b><i><a class="ref" href="midsp_1.html#T22" target="_self">Th22</a>, <a class="txt" href="midsp_1.html#E3:56"><i><font color="Green">E37</font></i></a></i>
<br/>.= 
 <a href="midsp_1.html#K9" target="_self">ID</a> <font color="Maroon">M</font>
<b>by </b><i><a class="ref" href="midsp_1.html#T17" target="_self">Th17</a></i>
;<br/>
<b>hence </b><a NAME="E5:56"/>
 ex <font color="Olive">v</font> being   <a href="midsp_1.html#M1" target="_self">Vector</a> of <font color="Maroon">M</font> st <font color="Maroon">u</font> <a href="midsp_1.html#K10" target="_self">+</a> <font color="Olive">v</font> <a href="hidden.html#R1">=</a>  <a href="midsp_1.html#K9" target="_self">ID</a> <font color="Maroon">M</font>
 ;<br/>


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