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<b>reconsider </b><font color="Maroon">c<sub>1</sub></font> =  <a href="xboole_0.html#K1">{}</a>  as  <a href="xboole_0.html#V1">empty</a> <a href="funct_1.html#NM1">Function</a> ;<br/>
<b>take </b>
<font color="Maroon">c<sub>1</sub></font>
;<br/>

<a NAME="E2:50_1_1"/>
 <a href="relat_1.html#K1">dom</a> <font color="Maroon">c<sub>1</sub></font> <a href="hidden.html#R1">=</a> <font color="Maroon">c<sub>1</sub></font>
 
;<br/>
<b>hence </b><a NAME="E3:50_1_1"/>
<font color="Maroon">c<sub>1</sub></font> is <a href="ordinal1.html#V5" target="_self">T-Sequence-like</a>
 <b>by </b><i><a class="ref" href="ordinal1.html#D7" target="_self">Def7</a></i>;<br/>


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