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<b>consider </b><font color="Maroon">d1</font> being    <a href="subset_1.html#M1">Element</a> of <font color="Maroon">D</font>, <font color="Maroon">d2</font> being    <a href="subset_1.html#M1">Element</a> of <font color="Maroon">D</font><b> such that </b><br/><a NAME="E2:22_1_1"/><i><font color="Green">E38</font></i>: 
<font color="Maroon">d1</font> <a href="hidden.html#NR2" target="_self">&lt;&gt;</a> <font color="Maroon">d2</font>
 <b>by </b><i><a class="ref" href="yellow_8.html#D1">YELLOW_8:def 1</a></i>;<br/>
<b>take </b><font color="Maroon">f</font> = <span class="p1"><a href="finseq_4.html#K3">&lt;*</a><span class="default"><font color="Maroon">d1</font>,<font color="Maroon">d2</font>,<font color="Maroon">d1</font></span><a href="finseq_4.html#K3">*&gt;</a></span>;<br/>

<a NAME="E3:22_1_1"/><i><font color="Green">E39</font></i>: 
( 1 <a href="hidden.html#R2">in</a>  <a href="finseq_1.html#K4">dom</a> <font color="Maroon">f</font> &amp; 2 <a href="hidden.html#R2">in</a>  <a href="finseq_1.html#K4">dom</a> <font color="Maroon">f</font> )
 
<b>by </b><i><a class="ref" href="topreal3.html#T6">TOPREAL3:6</a></i>;<br/>
<a NAME="E4:22_1_1"/>
( <font color="Maroon">f</font> <a href="funct_1.html#K1">.</a> 1 <a href="hidden.html#R1">=</a> <font color="Maroon">d1</font> &amp; <font color="Maroon">f</font> <a href="funct_1.html#K1">.</a> 2 <a href="hidden.html#R1">=</a> <font color="Maroon">d2</font> )
 
<b>by </b><i><a class="ref" href="finseq_1.html#T62">FINSEQ_1:62</a></i>;<br/>
<b>hence </b><a NAME="E5:22_1_1"/>
not <font color="Maroon">f</font> is <a href="funct_1.html#V3">constant</a>
 <b>by </b><i>, , <a class="ref" href="goboard1.html#D2">GOBOARD1:def 2</a></i>;<br/>

<a NAME="E6:22_1_1"/><i><font color="Green">E40</font></i>: 
 <a href="finseq_1.html#K3">len</a> <font color="Maroon">f</font> <a href="hidden.html#R1">=</a> 3
 
<b>by </b><i><a class="ref" href="finseq_1.html#T62">FINSEQ_1:62</a></i>;<br/>
<b>thus </b><font color="Maroon">f</font> <a href="finseq_4.html#K4">/.</a> 1 = 
<font color="Maroon">d1</font>
<b>by </b><i><a class="ref" href="finseq_4.html#T27">FINSEQ_4:27</a></i>
<br/>.= 
<font color="Maroon">f</font> <a href="finseq_4.html#K4">/.</a> <span class="p1">(<span class="default"><a href="finseq_1.html#K3">len</a> <font color="Maroon">f</font></span>)</span>
<b>by </b><i>, <a class="ref" href="finseq_4.html#T27">FINSEQ_4:27</a></i>
; <i><font color="Red">:: according to </font></i><a class="ref" href="finseq_6.html#D1">FINSEQ_6:def 1</a><br/>


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