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<b>let </b><font color="Maroon">c<sub>1</sub></font> be  <a href="orders_2.html#V3" target="_self">transitive</a> <a href="orders_2.html#V4" target="_self">antisymmetric</a>  <a href="orders_2.html#L1" target="_self">RelStr</a> ;<br/><b>let </b><font color="Maroon">c<sub>2</sub></font>, <font color="Maroon">c<sub>3</sub></font>, <font color="Maroon">c<sub>4</sub></font> be   <a href="struct_0.html#NM1">Element</a> of <font color="Maroon">c<sub>1</sub></font>;<br/>



<b>assume </b><a NAME="E1:17"/><i><font color="Green">E12</font></i>: 
( <font color="Maroon">c<sub>2</sub></font> <a href="orders_2.html#R2" target="_self">&lt;</a> <font color="Maroon">c<sub>3</sub></font> &amp; <font color="Maroon">c<sub>3</sub></font> <a href="orders_2.html#R2" target="_self">&lt;</a> <font color="Maroon">c<sub>4</sub></font> )
 ;<br/>

<a NAME="E2:17"/><b>then </b>
( <font color="Maroon">c<sub>2</sub></font> <a href="orders_2.html#R1" target="_self">&lt;=</a> <font color="Maroon">c<sub>3</sub></font> &amp; <font color="Maroon">c<sub>3</sub></font> <a href="orders_2.html#R1" target="_self">&lt;=</a> <font color="Maroon">c<sub>4</sub></font> )
 
<b>by </b><i><a class="ref" href="orders_2.html#D10" target="_self">Def10</a></i>;<br/>
<b>hence </b><a NAME="E3:17"/>
<font color="Maroon">c<sub>2</sub></font> <a href="orders_2.html#R1" target="_self">&lt;=</a> <font color="Maroon">c<sub>4</sub></font>
 <b>by </b><i><a class="ref" href="orders_2.html#T26" target="_self">Th26</a></i>; <i><font color="Red">:: according to </font></i><a class="ref" href="orders_2.html#D10" target="_self">ORDERS_2:def 10</a><br/>

<b>thus </b><a NAME="E4:17"/>
<font color="Maroon">c<sub>2</sub></font> <a href="hidden.html#NR2" target="_self">&lt;&gt;</a> <font color="Maroon">c<sub>4</sub></font>
 <b>by </b><i><a class="txt" href="orders_2.html#E1:17"><i><font color="Green">E12</font></i></a>, <a class="ref" href="orders_2.html#T28" target="_self">Th28</a></i>;<br/>


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