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<b>reconsider </b><font color="Maroon">MSi</font> = <font color="Maroon">Si</font> as   <a href="prob_1.html#NM3">SigmaField</a> of <font color="Maroon">X</font> ;<br/>
<b>consider </b><font color="Maroon">f</font> being  <a href="prob_2.html#V1">disjoint_valued</a> <a href="funct_2.html#NM1">Function</a> of  <a href="numbers.html#K5">NAT</a> ,<font color="Maroon">MSi</font>;<br/>
<b>reconsider </b><font color="Maroon">f</font> = <font color="Maroon">f</font> as    <a href="prob_1.html#M1">SetSequence</a> of <font color="Maroon">Si</font> <b>by </b><i/>;<br/>
<b>take </b>
<font color="Maroon">f</font>
;<br/>

<b>thus </b><a NAME="E4:7_1_1"/>
<font color="Maroon">f</font> is <a href="prob_2.html#V1">disjoint_valued</a>
 ;<br/>


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