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<b>let </b><font color="Maroon">L</font> be  non <a href="struct_0.html#V3">empty</a>  <a href="struct_0.html#L1">1-sorted</a> ;<br/><b>let </b><font color="Maroon">N</font> be  non <a href="struct_0.html#V3">empty</a> <a href="waybel_0.html#V7">directed</a>  <a href="waybel_0.html#L1">NetStr</a> of <font color="Maroon">L</font>;<br/><b>let </b><font color="Maroon">i</font> be   <a href="struct_0.html#NM1">Element</a> of <font color="Maroon">N</font>, <font color="Maroon">x</font> be   <a href="struct_0.html#NM1">Element</a> of <font color="Maroon">N</font>;<br/><b>let </b><font color="Maroon">x1</font> be   <a href="struct_0.html#NM1">Element</a> of <span class="p1">(<span class="default"><font color="Maroon">N</font> <a href="waybel_9.html#K5" target="_self">|</a> <font color="Maroon">i</font></span>)</span>;<br/>







<b>assume </b><a NAME="E1:52"/><i><font color="Green">E33</font></i>: 
<font color="Maroon">x</font> <a href="hidden.html#R1">=</a> <font color="Maroon">x1</font>
 ;<br/>

<b>thus </b><font color="Maroon">N</font> <a href="waybel_0.html#K2">.</a> <font color="Maroon">x</font> = 
<span class="p1">(<span class="default">the <a href="waybel_0.html#U1">mapping</a> of <font color="Maroon">N</font> <a href="partfun1.html#K2">|</a> the <a href="struct_0.html#U1">carrier</a> of <span class="p2">(<span class="default"><font color="Maroon">N</font> <a href="waybel_9.html#K5" target="_self">|</a> <font color="Maroon">i</font></span>)</span></span>)</span> <a href="funct_1.html#K1">.</a> <font color="Maroon">x1</font>
<b>by </b><i>, <a class="ref" href="funct_1.html#T72">FUNCT_1:72</a></i>
<br/>.= 
<span class="p1">(<span class="default"><font color="Maroon">N</font> <a href="waybel_9.html#K5" target="_self">|</a> <font color="Maroon">i</font></span>)</span> <a href="waybel_0.html#K2">.</a> <font color="Maroon">x1</font>
<b>by </b><i/>
;<br/>


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