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<b>let </b><font color="Maroon">c<sub>1</sub></font> be   <a href="ordinal1.html#NM2">Ordinal</a>;<br/>

<a NAME="E1:23"/><i><font color="Green">E10</font></i>: 
 <a href="ordinal1.html#K3">On</a> <font color="Maroon">c<sub>1</sub></font> <a href="hidden.html#R1">=</a> <font color="Maroon">c<sub>1</sub></font>
 
<b>by </b><i><a class="ref" href="ordinal2.html#T10" target="_self">Th10</a></i>;<br/>
<a NAME="E2:23"/>
for <font color="Olive">b<sub>1</sub></font> being  <a href="ordinal1.html#NM2">Ordinal</a> st  <a href="ordinal1.html#K3">On</a> <font color="Maroon">c<sub>1</sub></font> <a href="tarski.html#R1">c=</a> <font color="Olive">b<sub>1</sub></font> holds <br/><font color="Maroon">c<sub>1</sub></font> <a href="ordinal1.html#R1">c=</a> <font color="Olive">b<sub>1</sub></font>
 
<b>by </b><i><a class="ref" href="ordinal2.html#T10" target="_self">Th10</a></i>;<br/>
<b>hence </b><a NAME="E3:23"/>
 <a href="ordinal2.html#K3" target="_self">sup</a> <font color="Maroon">c<sub>1</sub></font> <a href="hidden.html#R1">=</a> <font color="Maroon">c<sub>1</sub></font>
 <b>by </b><i><a class="txt" href="ordinal2.html#E1:23"><i><font color="Green">E10</font></i></a>, <a class="ref" href="ordinal2.html#D7" target="_self">Def7</a></i>;<br/>


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