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<b>consider </b><font color="Maroon" title="c2">N</font> being    <a href="supinf_2.html#M1" title="SUPINF_2:mode.1">Num</a> of <font color="Maroon" title="c1">D</font>;<br/>
<b>set </b><font color="Maroon" title="c3">S</font> =  <a href="supinf_2.html#K14" title="SUPINF_2:func.14">Ser</a> <font color="Maroon" title="c1">D</font>,<font color="Maroon" title="c2">N</font>;<br/>
<a NAME="E2:83_1_1"/>
 <a href="relset_1.html#K5" title="RELSET_1:func.5">rng</a> <span class="p1">(<span class="default"><a href="supinf_2.html#K14" title="SUPINF_2:func.14">Ser</a> <font color="Maroon" title="c1">D</font>,<font color="Maroon" title="c2">N</font></span>)</span> is  non <a href="xboole_0.html#V1" title="XBOOLE_0:attr.1">empty</a> <a href="subset_1.html#NM2" title="SUBSET_1:NM.2">Subset</a> of <a href="numbers.html#K6" title="NUMBERS:func.6">ExtREAL</a> 
 
<b>by </b><i><a class="ref" href="funct_2.html#T6" title="FUNCT_2:th.6">FUNCT_2:6</a></i>;<br/>
<b>then reconsider </b><font color="Maroon" title="c4">SER</font> =  <a href="relset_1.html#K5" title="RELSET_1:func.5">rng</a> <span class="p1">(<span class="default"><a href="supinf_2.html#K14" title="SUPINF_2:func.14">Ser</a> <font color="Maroon" title="c1">D</font>,<font color="Maroon" title="c2">N</font></span>)</span> as  non <a href="xboole_0.html#V1" title="XBOOLE_0:attr.1">empty</a> <a href="subset_1.html#NM2" title="SUBSET_1:NM.2">Subset</a> of <a href="numbers.html#K6" title="NUMBERS:func.6">ExtREAL</a>  ;<br/>
<b>take </b>
<font color="Maroon" title="c4">SER</font>
;<br/>

<b>thus </b><a NAME="E4:83_1_1"/>
 ex <font color="Olive" title="b1">N</font> being   <a href="supinf_2.html#M1" title="SUPINF_2:mode.1">Num</a> of <font color="Maroon" title="c1">D</font> st <font color="Maroon" title="c4">SER</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  <a href="relset_1.html#K5" title="RELSET_1:func.5">rng</a> <span class="p1">(<span class="default"><a href="supinf_2.html#K14" title="SUPINF_2:func.14">Ser</a> <font color="Maroon" title="c1">D</font>,<font color="Olive" title="b1">N</font></span>)</span>
 ;<br/>


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