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<b>consider </b><font color="Maroon" title="c2">n</font> being    <a href="subset_1.html#M1" title="SUBSET_1:mode.1">Element</a> of  <a href="numbers.html#K5" title="NUMBERS:func.5">NAT</a> <b> such that </b><br/><a NAME="E2:60_1_1"/><i><font color="Green" title="E43">A1</font></i>: 
<font color="Maroon" title="c1">X</font>,<font color="Maroon" title="c2">n</font> <a href="wellord2.html#R2" title="WELLORD2:pred.2">are_equipotent</a> 
 <b>by </b><i><a class="ref" href="card_1.html#T74" target="_self" title="CARD_1:th.74">Th74</a></i>;<br/>
<font color="Maroon" title="c2">n</font> = 
 <a href="card_1.html#K1" title="CARD_1:func.1">Card</a> <font color="Maroon" title="c2">n</font>
<b>by </b><i><a class="ref" href="card_1.html#T66" target="_self" title="CARD_1:th.66">Th66</a></i>
<br/>.= 
 <a href="card_1.html#K1" title="CARD_1:func.1">Card</a> <font color="Maroon" title="c1">X</font>
<b>by </b><i><a class="txt" href="card_1.html#E2:60_1_1"><i><font color="Green" title="E43">A1</font></i></a>, <a class="ref" href="card_1.html#T21" target="_self" title="CARD_1:th.21">Th21</a></i>
;<br/>
<b>hence </b><a NAME="E4:60_1_1"/>
 <a href="card_1.html#K1" title="CARD_1:func.1">Card</a> <font color="Maroon" title="c1">X</font> is    <a href="subset_1.html#M1" title="SUBSET_1:mode.1">Element</a> of  <a href="numbers.html#K5" title="NUMBERS:func.5">NAT</a> 
 ;<br/>


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