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<b>let </b><font color="Maroon">X</font> be    <a href="hidden.html#M1">set</a> ;<br/><b>let </b><font color="Maroon">fs</font> be    <a href="finseq_1.html#M2">FinSequence</a> of <font color="Maroon">X</font>;<br/>



<b>reconsider </b><font color="Maroon">fs'</font> = <font color="Maroon">fs</font> as   <a href="finseq_1.html#NM4">FinSubsequence</a> <b>by </b><i><a class="ref" href="finseq_1.html#T68">FINSEQ_1:68</a></i>;<br/>
<a NAME="E2:39"/>
<font color="Maroon">fs'</font> <a href="tarski.html#R1">c=</a> <font color="Maroon">fs</font>
 
;<br/>
<b>hence </b><a NAME="E3:39"/>
<font color="Maroon">fs</font> is    <a href="graph_2.html#M1" target="_self">FinSubsequence</a> of <font color="Maroon">fs</font>
 <b>by </b><i/>;<br/>


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