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<b>consider </b><font color="Maroon">b</font> being  <a href="seqm_3.html#V6">natural-yielding</a>  <a href="pboole.html#M1">ManySortedSet</a> of <font color="Maroon">X</font>;<br/>
<a NAME="E2:70_1_1"/>
<font color="Maroon">b</font> is <a href="seq_1.html#V1">real-yielding</a>
 
;<br/>
<b>hence </b><a NAME="E3:70_1_1"/>
 ex <font color="Olive">b<sub>1</sub></font> being   <a href="pboole.html#M1">ManySortedSet</a> of <font color="Maroon">X</font> st <font color="Olive">b<sub>1</sub></font> is <a href="seq_1.html#V1">real-yielding</a>
 ;<br/>


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