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<b>consider </b><font color="Maroon">c<sub>2</sub></font> being   <a href="afinsq_1.html#NM2">XFinSequence</a> of <font color="Maroon">c<sub>1</sub></font>;<br/>
<a NAME="E2:73_1_1"/>
<font color="Maroon">c<sub>2</sub></font> <a href="hidden.html#R2">in</a> <font color="Maroon">c<sub>1</sub></font> <a href="afinsq_1.html#K10" target="_self">^omega</a> 
 
<b>by </b><i><a class="ref" href="afinsq_1.html#D8" target="_self">Def8</a></i>;<br/>
<b>hence </b><a NAME="E3:73_1_1"/>
not <font color="Maroon">c<sub>1</sub></font> <a href="afinsq_1.html#K10" target="_self">^omega</a>  is <a href="xboole_0.html#V1">empty</a>
 ;<br/>


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