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

<b>reconsider </b><font color="Maroon">y</font> = <font color="Maroon">x</font> as    <a href="finseq_2.html#M2">Element</a> of <font color="Maroon">D</font> <a href="finseq_2.html#K3">*</a>  ;<br/>
<a NAME="E2:9_1_1"/>
<font color="Maroon">y</font> is    <a href="finseq_1.html#M2">FinSequence</a> of <font color="Maroon">D</font>
 
;<br/>
<b>hence </b><a NAME="E3:9_1_1"/>
<font color="Maroon">x</font> is    <a href="finseq_1.html#M2">FinSequence</a> of <font color="Maroon">D</font>
 ;<br/>


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