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<b>let </b><font color="Maroon">r</font> be    <a href="subset_1.html#M1">Element</a> of  <a href="arytm_3.html#K7" target="_self">RAT+</a> ;<br/>

<b>take </b><font color="Maroon">s</font> = <font color="Maroon">r</font> <a href="arytm_3.html#K11" target="_self">+</a> <a href="arytm_3.html#K14" target="_self">one</a> ;<br/>

<a NAME="E1:118"/>
<font color="Maroon">s</font> <a href="arytm_3.html#K11" target="_self">+</a> <a href="arytm_3.html#K13" target="_self">{}</a>  <a href="hidden.html#R1">=</a> <font color="Maroon">s</font>
 
<b>by </b><i/>;<br/>
<a NAME="E2:118"/><b>then </b>
( <font color="Maroon">r</font> <a href="arytm_3.html#R3" target="_self">&lt;='</a> <font color="Maroon">s</font> &amp; <font color="Maroon">r</font> <a href="hidden.html#NR2" target="_self">&lt;&gt;</a> <font color="Maroon">s</font> )
 
<b>by </b><i><a class="ref" href="arytm_3.html#T23" target="_self">Th23</a>, <a class="ref" href="arytm_3.html#T24" target="_self">Th24</a></i>;<br/>
<b>hence </b><a NAME="E3:118"/>
<font color="Maroon">r</font> <a href="arytm_3.html#NR4" target="_self">&lt;</a> <font color="Maroon">s</font>
 <b>by </b><i><a class="ref" href="arytm_3.html#T26" target="_self">Th26</a></i>;<br/>


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