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<b>let </b><font color="Maroon">c<sub>1</sub></font> be  <a href="glib_003.html#V12" target="_self">[Weighted]</a> <a href="glib_003.html#V13" target="_self">[ELabeled]</a> <a href="glib_003.html#V14" target="_self">[VLabeled]</a> <a href="glib_000.html#NM11">GraphSeq</a>;<br/>

<b>assume </b><a NAME="E1:150_2_1"/><i><font color="Green">E28</font></i>: 
( <font color="Maroon">c<sub>1</sub></font> is <a href="glib_003.html#V15" target="_self">real-weighted</a> &amp; <font color="Maroon">c<sub>1</sub></font> is <a href="glib_003.html#V17" target="_self">real-elabeled</a> &amp; <font color="Maroon">c<sub>1</sub></font> is <a href="glib_003.html#V18" target="_self">real-vlabeled</a> )
 ;<br/>

<b>let </b><font color="Maroon">c<sub>2</sub></font> be   <a href="nat_1.html#NM1">Nat</a>; <i><font color="Red">:: according to </font></i><a class="ref" href="glib_003.html#D31" target="_self">GLIB_003:def 31</a><br/>

<b>reconsider </b><font color="Maroon">c<sub>3</sub></font> = <font color="Maroon">c<sub>1</sub></font> <a href="glib_000.html#K42">.-&gt;</a> <font color="Maroon">c<sub>2</sub></font> as  <a href="glib_003.html#V7" target="_self">real-weighted</a> <a href="glib_003.html#V9" target="_self">real-elabeled</a> <a href="glib_003.html#V10" target="_self">real-vlabeled</a> <a href="glib_003.html#NM7">WEVGraph</a> <b>by </b><i><a class="txt" href="glib_003.html#E1:150_2_1"><i><font color="Green">E28</font></i></a>, <a class="ref" href="glib_003.html#D27" target="_self">Def27</a>, <a class="ref" href="glib_003.html#D29" target="_self">Def29</a>, <a class="ref" href="glib_003.html#D30" target="_self">Def30</a></i>;<br/>
<a NAME="E3:150_2_1"/>
<font color="Maroon">c<sub>3</sub></font> is <a href="glib_003.html#V11" target="_self">real-WEV</a>
 
;<br/>
<b>hence </b><a NAME="E4:150_2_1"/>
<font color="Maroon">c<sub>1</sub></font> <a href="glib_000.html#K42">.-&gt;</a> <font color="Maroon">c<sub>2</sub></font> is <a href="glib_003.html#V11" target="_self">real-WEV</a>
 ;<br/>


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