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<b>let </b><font color="Maroon">R</font> be  non <a href="struct_0.html#V3">empty</a> <a href="orders_2.html#NM1">Poset</a>;<br/><b>let </b><font color="Maroon">z</font> be  non <a href="xboole_0.html#V1">empty</a>  <a href="hidden.html#M1">set</a> ;<br/>



<b>set </b><font color="Maroon">x</font> =  <a href="osalg_1.html#K4" target="_self">ConstOSSet</a> <font color="Maroon">R</font>,<font color="Maroon">z</font>;<br/>
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for <font color="Olive">s1</font>, <font color="Olive">s2</font> being  <a href="struct_0.html#NM1">Element</a> of <font color="Maroon">R</font>  st <font color="Olive">s1</font> <a href="orders_2.html#R3">&lt;=</a> <font color="Olive">s2</font> holds <br/><span class="p1">(<span class="default"><a href="osalg_1.html#K4" target="_self">ConstOSSet</a> <font color="Maroon">R</font>,<font color="Maroon">z</font></span>)</span> <a href="funct_1.html#K1">.</a> <font color="Olive">s1</font> <a href="tarski.html#R1">c=</a> <span class="p1">(<span class="default"><a href="osalg_1.html#K4" target="_self">ConstOSSet</a> <font color="Maroon">R</font>,<font color="Maroon">z</font></span>)</span> <a href="funct_1.html#K1">.</a> <font color="Olive">s2</font>
 
<b>by </b><i/>;<br/>
<b>hence </b><a NAME="E2:52"/>
 <a href="osalg_1.html#K4" target="_self">ConstOSSet</a> <font color="Maroon">R</font>,<font color="Maroon">z</font> is <a href="osalg_1.html#V11" target="_self">order-sorted</a>
 <b>by </b><i/>;<br/>


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