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<a NAME="E1:9_2_1"/>
ex <font color="Olive">b<sub>1</sub></font> being  <a href="nat_1.html#NM1">Nat</a> st  <a href="relat_1.html#K1">dom</a> <font color="Maroon">c<sub>1</sub></font> <a href="hidden.html#R1">=</a> <font color="Olive">b<sub>1</sub></font>
 
<b>by </b><i><a class="ref" href="afinsq_1.html#T7" target="_self">Th7</a></i>;<br/>
<b>hence </b><a NAME="E2:9_2_1"/>
 <a href="relat_1.html#K1">dom</a> <font color="Maroon">c<sub>1</sub></font> is <a href="ordinal1.html#V7">natural</a>
 ;<br/>


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