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<b>let </b><font color="Maroon">m</font> be    <a href="subset_1.html#M1">Element</a> of  <a href="numbers.html#K5">NAT</a> ;<br/>

<b>assume </b><a NAME="E1:54"/><i><font color="Green">E39</font></i>: 
<font color="Maroon">m</font> <a href="hidden.html#R2">in</a>  <a href="finseq_1.html#K2">Seg</a> 4
 ;<br/>

<a NAME="E2:54"/><b>then </b>
( 1 <a href="xxreal_0.html#R1">&lt;=</a> <font color="Maroon">m</font> &amp; <font color="Maroon">m</font> <a href="xxreal_0.html#R1">&lt;=</a> 4 )
 
<b>by </b><i><a class="ref" href="finseq_1.html#T3">FINSEQ_1:3</a></i>;<br/>
<a NAME="E3:54"/><b>then </b>
( <font color="Maroon">m</font> <a href="hidden.html#R1">=</a> 0 or <font color="Maroon">m</font> <a href="hidden.html#R1">=</a> 1 or <font color="Maroon">m</font> <a href="hidden.html#R1">=</a> 2 or <font color="Maroon">m</font> <a href="hidden.html#R1">=</a> 3 or <font color="Maroon">m</font> <a href="hidden.html#R1">=</a> 4 )
 
<b>by </b><i><a class="ref" href="cqc_the1.html#T5">CQC_THE1:5</a></i>;<br/>
<b>hence </b><a NAME="E4:54"/>
( <font color="Maroon">m</font> <a href="hidden.html#R1">=</a> 1 or <font color="Maroon">m</font> <a href="hidden.html#R1">=</a> 2 or <font color="Maroon">m</font> <a href="hidden.html#R1">=</a> 3 or <font color="Maroon">m</font> <a href="hidden.html#R1">=</a> 4 )
 <b>by </b><i>, <a class="ref" href="finseq_1.html#T3">FINSEQ_1:3</a></i>;<br/>


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