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<b>let </b><font color="Maroon">p</font> be   <a href="struct_0.html#NM1">Element</a> of <span class="p1">(<span class="default"><a href="euclid.html#K15">TOP-REAL</a> 2</span>)</span>;<br/>

<i><font color="Green">E49</font></i>: <font color="Maroon">p</font> = 
<span class="p1"><a href="euclid.html#K23">|[</a><span class="default"><span class="p2">(<span class="default"><font color="Maroon">p</font> <a href="euclid.html#K21">`1</a> </span>)</span>,<span class="p2">(<span class="default"><font color="Maroon">p</font> <a href="euclid.html#K22">`2</a> </span>)</span></span><a href="euclid.html#K23">]|</a></span>
<b>by </b><i><a class="ref" href="euclid.html#T57">EUCLID:57</a></i>
<br/>.= 
<span class="p1"><a href="finseq_1.html#K10">&lt;*</a><span class="default"><span class="p2">(<span class="default"><font color="Maroon">p</font> <a href="euclid.html#K21">`1</a> </span>)</span>,<span class="p2">(<span class="default"><font color="Maroon">p</font> <a href="euclid.html#K22">`2</a> </span>)</span></span><a href="finseq_1.html#K10">*&gt;</a></span>

;<br/>
<b>reconsider </b><font color="Maroon">r1</font> = <font color="Maroon">p</font> <a href="euclid.html#K21">`1</a> , <font color="Maroon">r2</font> = <font color="Maroon">p</font> <a href="euclid.html#K22">`2</a>  as   <a href="real_1.html#NM1">Real</a> ;<br/>
<b>reconsider </b><font color="Maroon">g</font> = <span class="p1"><a href="finseq_1.html#K10">&lt;*</a><span class="default"><font color="Maroon">r1</font>,<font color="Maroon">r2</font></span><a href="finseq_1.html#K10">*&gt;</a></span> as    <a href="finseq_1.html#M2">FinSequence</a> of  <a href="numbers.html#K1">REAL</a>  <b>by </b><i><a class="ref" href="finseq_2.html#T121">FINSEQ_2:121</a></i>;<br/>
<i><font color="Green">E50</font></i>:  <a href="jordan2b.html#K1" target="_self">Proj</a> <font color="Maroon">p</font>,1 = 
<font color="Maroon">g</font> <a href="finseq_4.html#K4">/.</a> 1
<b>by </b><i>, </i>
<br/>.= 
<font color="Maroon">p</font> <a href="euclid.html#K21">`1</a> 
<b>by </b><i><a class="ref" href="finseq_4.html#T26">FINSEQ_4:26</a></i>
;<br/>
 <a href="jordan2b.html#K1" target="_self">Proj</a> <font color="Maroon">p</font>,2 = 
<font color="Maroon">g</font> <a href="finseq_4.html#K4">/.</a> 2
<b>by </b><i>, </i>
<br/>.= 
<font color="Maroon">p</font> <a href="euclid.html#K22">`2</a> 
<b>by </b><i><a class="ref" href="finseq_4.html#T26">FINSEQ_4:26</a></i>
;<br/>
<b>hence </b><a NAME="E6:35"/>
(  <a href="jordan2b.html#K1" target="_self">Proj</a> <font color="Maroon">p</font>,1 <a href="hidden.html#R1">=</a> <font color="Maroon">p</font> <a href="euclid.html#K21">`1</a>  &amp;  <a href="jordan2b.html#K1" target="_self">Proj</a> <font color="Maroon">p</font>,2 <a href="hidden.html#R1">=</a> <font color="Maroon">p</font> <a href="euclid.html#K22">`2</a>  )
 <b>by </b><i/>;<br/>


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