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<b>defpred </b><font color="Maroon">S<sub>1</sub></font>[   <a href="subset_1.html#M1">Element</a> of  <a href="numbers.html#K1">REAL</a> ] <b>means </b><font color="Maroon">V</font>,<font color="Maroon">Q</font> <a href="metric_2.html#R4" target="_self">is_dst</a> <font color="Maroon">a<sub>1</sub></font>;<br/>
<a NAME="E1:32_1_1"/>
<span class="p1">{<span class="default"> <font color="Olive">v</font> where <font color="Olive">v</font> is    <a href="subset_1.html#M1">Element</a> of  <a href="numbers.html#K1">REAL</a>  : <font color="Maroon">S<sub>1</sub></font>[<font color="Olive">v</font>] </span>}</span>  <a href="tarski.html#R1">c=</a>  <a href="numbers.html#K1">REAL</a> 
 
<b>from </b><i><a class="ref" href="fraenkel.html#S10">FRAENKEL:sch 10</a>();<br/></i>
<b>hence </b><a NAME="E2:32_1_1"/>
<span class="p1">{<span class="default"> <font color="Olive">v</font> where <font color="Olive">v</font> is    <a href="subset_1.html#M1">Element</a> of  <a href="numbers.html#K1">REAL</a>  : <font color="Maroon">V</font>,<font color="Maroon">Q</font> <a href="metric_2.html#R4" target="_self">is_dst</a> <font color="Olive">v</font> </span>}</span>  is   <a href="subset_1.html#NM2">Subset</a> of <a href="numbers.html#K1">REAL</a> 
 ;<br/>


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