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<b>let </b><font color="Maroon">p1</font> be   <a href="finseq_1.html#NM1">FinSequence</a>, <font color="Maroon">p2</font> be   <a href="finseq_1.html#NM1">FinSequence</a>, <font color="Maroon">p3</font> be   <a href="finseq_1.html#NM1">FinSequence</a>, <font color="Maroon">p4</font> be   <a href="finseq_1.html#NM1">FinSequence</a>;<br/>

<b>thus </b><a NAME="E1:4"/>
<span class="p1">(<span class="default"><span class="p2">(<span class="default"><font color="Maroon">p1</font> <a href="finseq_1.html#K7">^</a> <font color="Maroon">p2</font></span>)</span> <a href="finseq_1.html#K7">^</a> <font color="Maroon">p3</font></span>)</span> <a href="finseq_1.html#K7">^</a> <font color="Maroon">p4</font> <a href="hidden.html#R1">=</a> <span class="p1">(<span class="default"><font color="Maroon">p1</font> <a href="finseq_1.html#K7">^</a> <font color="Maroon">p2</font></span>)</span> <a href="finseq_1.html#K7">^</a> <span class="p1">(<span class="default"><font color="Maroon">p3</font> <a href="finseq_1.html#K7">^</a> <font color="Maroon">p4</font></span>)</span>
 <b>by </b><i><a class="ref" href="finseq_1.html#T45">FINSEQ_1:45</a></i>;<br/>

<b>thus </b><span class="p1">(<span class="default"><span class="p2">(<span class="default"><font color="Maroon">p1</font> <a href="finseq_1.html#K7">^</a> <font color="Maroon">p2</font></span>)</span> <a href="finseq_1.html#K7">^</a> <font color="Maroon">p3</font></span>)</span> <a href="finseq_1.html#K7">^</a> <font color="Maroon">p4</font> = 
<span class="p1">(<span class="default"><font color="Maroon">p1</font> <a href="finseq_1.html#K7">^</a> <span class="p2">(<span class="default"><font color="Maroon">p2</font> <a href="finseq_1.html#K7">^</a> <font color="Maroon">p3</font></span>)</span></span>)</span> <a href="finseq_1.html#K7">^</a> <font color="Maroon">p4</font>
<b>by </b><i><a class="ref" href="finseq_1.html#T45">FINSEQ_1:45</a></i>
<br/>.= 
<font color="Maroon">p1</font> <a href="finseq_1.html#K7">^</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><font color="Maroon">p2</font> <a href="finseq_1.html#K7">^</a> <font color="Maroon">p3</font></span>)</span> <a href="finseq_1.html#K7">^</a> <font color="Maroon">p4</font></span>)</span>
<b>by </b><i><a class="ref" href="finseq_1.html#T45">FINSEQ_1:45</a></i>
;<br/>

<b>hence </b><a NAME="E3:4"/>
<span class="p1">(<span class="default"><span class="p2">(<span class="default"><font color="Maroon">p1</font> <a href="finseq_1.html#K7">^</a> <font color="Maroon">p2</font></span>)</span> <a href="finseq_1.html#K7">^</a> <font color="Maroon">p3</font></span>)</span> <a href="finseq_1.html#K7">^</a> <font color="Maroon">p4</font> <a href="hidden.html#R1">=</a> <font color="Maroon">p1</font> <a href="finseq_1.html#K7">^</a> <span class="p1">(<span class="default"><font color="Maroon">p2</font> <a href="finseq_1.html#K7">^</a> <span class="p2">(<span class="default"><font color="Maroon">p3</font> <a href="finseq_1.html#K7">^</a> <font color="Maroon">p4</font></span>)</span></span>)</span>
 <b>by </b><i><a class="ref" href="finseq_1.html#T45">FINSEQ_1:45</a></i>;<br/>

<b>thus </b><a NAME="E4:4"/>
<span class="p1">(<span class="default"><span class="p2">(<span class="default"><font color="Maroon">p1</font> <a href="finseq_1.html#K7">^</a> <font color="Maroon">p2</font></span>)</span> <a href="finseq_1.html#K7">^</a> <font color="Maroon">p3</font></span>)</span> <a href="finseq_1.html#K7">^</a> <font color="Maroon">p4</font> <a href="hidden.html#R1">=</a> <span class="p1">(<span class="default"><font color="Maroon">p1</font> <a href="finseq_1.html#K7">^</a> <span class="p2">(<span class="default"><font color="Maroon">p2</font> <a href="finseq_1.html#K7">^</a> <font color="Maroon">p3</font></span>)</span></span>)</span> <a href="finseq_1.html#K7">^</a> <font color="Maroon">p4</font>
 <b>by </b><i><a class="ref" href="finseq_1.html#T45">FINSEQ_1:45</a></i>;<br/>


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