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<b>let </b><font color="Maroon">RS</font> be   <a href="seq_1.html#NM1">Real_Sequence</a>;<br/>

<b>assume </b><a NAME="E1:8"/>
<font color="Maroon">RS</font> <a href="funct_2.html#R1">=</a>  <a href="partfun1.html#K6">id</a> <a href="numbers.html#K5">NAT</a> 
 ;<br/>

<b>hence </b><a NAME="E2:8"/>
 <a href="relset_1.html#K5">rng</a> <font color="Maroon">RS</font> <a href="tarski.html#R1">c=</a>  <a href="numbers.html#K5">NAT</a> 
 <b>by </b><i><a class="ref" href="relat_1.html#T71">RELAT_1:71</a></i>; <i><font color="Red">:: according to </font></i><a class="ref" href="seqm_3.html#D8">SEQM_3:def 8</a><br/>


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