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<a NAME="E1:55"/>
 <a href="partfun1.html#K6">id</a> <a href="numbers.html#K5">NAT</a>  is   <a href="funct_2.html#NM1">Function</a> of  <a href="numbers.html#K5">NAT</a> , <a href="numbers.html#K1">REAL</a> 
 
<b>by </b><i><a class="ref" href="funct_2.html#T9">FUNCT_2:9</a></i>;<br/>
<b>hence </b><a NAME="E2:55"/>
 <a href="partfun1.html#K6">id</a> <a href="numbers.html#K5">NAT</a>  is  <a href="seqm_3.html#V1">increasing</a> <a href="seqm_3.html#NM1">Seq_of_Nat</a>
 <b>by </b><i><a class="ref" href="frechet2.html#T2">FRECHET2:2</a></i>;<br/>


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