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<b>let </b><font color="Maroon">L</font> be  non <a href="struct_0.html#V3">empty</a>  <a href="orders_2.html#L1">RelStr</a> , <font color="Maroon">M</font> be  non <a href="struct_0.html#V3">empty</a>  <a href="orders_2.html#L1">RelStr</a> ;<br/>

<b>assume </b><b>that </b><br/><a NAME="E1:16"/><i><font color="Green">E30</font></i>: 
<font color="Maroon">L</font>,<font color="Maroon">M</font> <a href="waybel_1.html#R5">are_isomorphic</a> 
 <b>and </b><br/><a NAME="E2:16"/><i><font color="Green">E31</font></i>: 
<font color="Maroon">L</font> is <a href="orders_2.html#V2">reflexive</a>
 ;<br/>

<a NAME="E3:16"/>
<font color="Maroon">M</font>,<font color="Maroon">L</font> <a href="waybel_1.html#R5">are_isomorphic</a> 
 
<b>by </b><i>, <a class="ref" href="waybel_1.html#T7">WAYBEL_1:7</a></i>;<br/>
<b>then consider </b><font color="Maroon">f</font> being   <a href="struct_0.html#NM6">Function</a> of <font color="Maroon">M</font>,<font color="Maroon">L</font><b> such that </b><br/><a NAME="E5:16"/><i><font color="Green">E37</font></i>: 
<font color="Maroon">f</font> is <a href="waybel_0.html#V23">isomorphic</a>
 <b>by </b><i><a class="ref" href="waybel_1.html#D8">WAYBEL_1:def 8</a></i>;<br/>
<b>let </b><font color="Maroon">x</font> be   <a href="struct_0.html#NM1">Element</a> of <font color="Maroon">M</font>; <i><font color="Red">:: according to </font></i><a class="ref" href="yellow_0.html#D1">YELLOW_0:def 1</a><br/>

<b>reconsider </b><font color="Maroon">fx</font> = <font color="Maroon">f</font> <a href="funct_2.html#K3">.</a> <font color="Maroon">x</font> as   <a href="struct_0.html#NM1">Element</a> of <font color="Maroon">L</font> ;<br/>
<a NAME="E7:16"/>
<font color="Maroon">fx</font> <a href="orders_2.html#R1">&lt;=</a> <font color="Maroon">fx</font>
 
<b>by </b><i>, <a class="ref" href="yellow_0.html#D1">YELLOW_0:def 1</a></i>;<br/>
<b>hence </b><a NAME="E8:16"/>
<font color="Maroon">x</font> <a href="orders_2.html#R1">&lt;=</a> <font color="Maroon">x</font>
 <b>by </b><i>, <a class="ref" href="waybel_0.html#T66">WAYBEL_0:66</a></i>;<br/>


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