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<b>let </b><font color="Maroon" title="c2">m</font>, <font color="Maroon" title="c3">n</font> be  <a href="ordinal1.html#V7" title="ORDINAL1:attr.7">natural</a>  <a href="ordinal1.html#NM1" title="ORDINAL1:NM.1">number</a> ;<br/>

<b>assume </b><a NAME="E1:9_1_2"/><i><font color="Green" title="E9">A2</font></i>: 
(  <a href="ami_3.html#K16" title="AMI_3:func.16">il.</a> <font color="Maroon" title="c2">m</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <font color="Maroon" title="c1">l</font> &amp;  <a href="ami_3.html#K16" title="AMI_3:func.16">il.</a> <font color="Maroon" title="c3">n</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <font color="Maroon" title="c1">l</font> )
 ;<br/>

<b>reconsider </b><font color="Maroon" title="c4">m</font> = <font color="Maroon" title="c2">m</font>, <font color="Maroon" title="c5">n</font> = <font color="Maroon" title="c3">n</font> as    <a href="subset_1.html#M2" title="SUBSET_1:mode.2">Element</a> of  <a href="numbers.html#K5" title="NUMBERS:func.5">NAT</a>  <b>by </b><i><a class="ref" href="ordinal1.html#D13" title="ORDINAL1:def.13">ORDINAL1:def 13</a></i>;<br/>
<a NAME="E3:9_1_2"/>
( <font color="Maroon" title="c1">l</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  <a href="scmpds_3.html#K2" title="SCMPDS_3:func.2">inspos</a> <font color="Maroon" title="c4">m</font> &amp; <font color="Maroon" title="c1">l</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  <a href="scmpds_3.html#K2" title="SCMPDS_3:func.2">inspos</a> <font color="Maroon" title="c5">n</font> )
 
<b>by </b><i><a class="txt" href="scmpds_9.html#E1:9_1_2"><i><font color="Green" title="E9">A2</font></i></a>, <a class="ref" href="scmpds_3.html#D2" title="SCMPDS_3:def.2">SCMPDS_3:def 2</a></i>;<br/>
<b>hence </b><a NAME="E4:9_1_2"/>
<font color="Maroon" title="c2">m</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <font color="Maroon" title="c3">n</font>
 <b>by </b><i><a class="ref" href="scmpds_3.html#T31" title="SCMPDS_3:th.31">SCMPDS_3:31</a></i>;<br/>


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