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<a NAME="E1:44_3_1"/>
<font color="Maroon">A1</font> <a href="hidden.html#R2">in</a> <font color="Maroon">W</font>
 
<b>by </b><i/>;<br/>
<a NAME="E2:44_3_1"/><b>then </b><i><font color="Green">E13</font></i>: 
( <font color="Maroon">A1</font> <a href="hidden.html#R2">in</a>  <a href="ordinal1.html#K3">On</a> <font color="Maroon">W</font> &amp;  <a href="relat_1.html#K1">dom</a> <font color="Maroon">phi</font> <a href="hidden.html#R1">=</a>  <a href="ordinal1.html#K3">On</a> <font color="Maroon">W</font> )
 
<b>by </b><i>, <a class="ref" href="ordinal1.html#D10">ORDINAL1:def 10</a></i>;<br/>
<b>reconsider </b><font color="Maroon">B</font> = <font color="Maroon">phi</font> <a href="funct_1.html#K1">.</a> <font color="Maroon">A1</font> as   <a href="ordinal1.html#NM2">Ordinal</a> ;<br/>
<a NAME="E4:44_3_1"/>
( <font color="Maroon">B</font> <a href="hidden.html#R2">in</a>  <a href="relat_1.html#K2">rng</a> <font color="Maroon">phi</font> &amp;  <a href="relat_1.html#K2">rng</a> <font color="Maroon">phi</font> <a href="tarski.html#R1">c=</a>  <a href="ordinal1.html#K3">On</a> <font color="Maroon">W</font> )
 
<b>by </b><i>, , <a class="ref" href="funct_1.html#D5">FUNCT_1:def 5</a></i>;<br/>
<a NAME="E5:44_3_1"/><b>then </b>
( <font color="Maroon">B</font> <a href="hidden.html#R2">in</a>  <a href="ordinal1.html#K3">On</a> <font color="Maroon">W</font> &amp;  <a href="ordinal1.html#K3">On</a> <font color="Maroon">W</font> <a href="tarski.html#R1">c=</a> <font color="Maroon">W</font> )
 
<b>by </b><i><a class="ref" href="ordinal2.html#T9">ORDINAL2:9</a></i>;<br/>
<b>hence </b><a NAME="E6:44_3_1"/>
<font color="Maroon">phi</font> <a href="funct_1.html#K1">.</a> <font color="Maroon">A1</font> is    <a href="ordinal4.html#M1" target="_self">Ordinal</a> of <font color="Maroon">W</font>
 <b>by </b><i/>;<br/>


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