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<b>let </b><font color="Maroon">s</font> be    <a href="subset_1.html#M2">Element</a> of <font color="Maroon">S</font>;<br/>

<b>thus </b><a NAME="E1:10_1_1"/>
<font color="Maroon">s</font> is   <a href="partfun1.html#NM1">PartFunc</a> of <font color="Maroon">A</font>,<font color="Maroon">B</font>
 <b>by </b><i><a class="ref" href="partfun1.html#T120">PARTFUN1:120</a></i>;<br/>


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