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<b>let </b><font color="Maroon">R</font> be   <a href="relat_1.html#NM1">Relation</a>;<br/><b>let </b><font color="Maroon">X</font> be    <a href="hidden.html#M1">set</a> ;<br/>



<b>assume </b><a NAME="E1:66"/>
<font color="Maroon">R</font> <a href="wellord1.html#R2">well_orders</a> <font color="Maroon">X</font>
 ;<br/>

<a NAME="E2:66"/><b>then </b>
<font color="Maroon">R</font> <a href="orders_1.html#R2" target="_self">partially_orders</a> <font color="Maroon">X</font>
 
<b>by </b><i/>;<br/>
<b>hence </b><a NAME="E3:66"/>
<font color="Maroon">R</font> <a href="wellord1.html#K2">|_2</a> <font color="Maroon">X</font> is   <a href="orders_1.html#NM2">Order</a> of <font color="Maroon">X</font>
 <b>by </b><i/>;<br/>


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