<?xml version="1.0"?>
<div class="add">

<b>let </b><font color="Maroon">X</font> be    <a href="hidden.html#M1">set</a> ;<br/><b>let </b><font color="Maroon">a</font> be   <a href="polynom1.html#NM1">bag</a> of <font color="Maroon">X</font>, <font color="Maroon">b</font> be   <a href="polynom1.html#NM1">bag</a> of <font color="Maroon">X</font>;<br/>



<b>assume </b><a NAME="E1:47"/>
 <a href="polynom2.html#K1">support</a> <font color="Maroon">a</font> <a href="xboole_0.html#R1">misses</a>  <a href="polynom2.html#K1">support</a> <font color="Maroon">b</font>
 ;<br/>

<a NAME="E2:47"/><b>then </b><i><font color="Green">E41</font></i>: 
<span class="p1">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">a</font></span>)</span> <a href="subset_1.html#K9">/\</a> <span class="p1">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">b</font></span>)</span> <a href="hidden.html#R1">=</a>  <a href="xboole_0.html#K1">{}</a> 
 
<b>by </b><i><a class="ref" href="xboole_0.html#D7">XBOOLE_0:def 7</a></i>;<br/>
<b>set </b><font color="Maroon">ab</font> = <font color="Maroon">a</font> <a href="polynom1.html#K9">+</a> <font color="Maroon">b</font>;<br/>
<b>set </b><font color="Maroon">Pa</font> =  <a href="nat_3.html#K8" target="_self">Product</a> <font color="Maroon">a</font>;<br/>
<b>set </b><font color="Maroon">Pb</font> =  <a href="nat_3.html#K8" target="_self">Product</a> <font color="Maroon">b</font>;<br/>
<b>set </b><font color="Maroon">Pab</font> =  <a href="nat_3.html#K8" target="_self">Product</a> <span class="p1">(<span class="default"><font color="Maroon">a</font> <a href="polynom1.html#K9">+</a> <font color="Maroon">b</font></span>)</span>;<br/>
<b>set </b><font color="Maroon">sab</font> =  <a href="polynom2.html#K1">support</a> <span class="p1">(<span class="default"><font color="Maroon">a</font> <a href="polynom1.html#K9">+</a> <font color="Maroon">b</font></span>)</span>;<br/>
<b>set </b><font color="Maroon">sa</font> =  <a href="polynom2.html#K1">support</a> <font color="Maroon">a</font>;<br/>
<b>set </b><font color="Maroon">sb</font> =  <a href="polynom2.html#K1">support</a> <font color="Maroon">b</font>;<br/>
<b>consider </b><font color="Maroon">f</font> being    <a href="finseq_1.html#M2">FinSequence</a> of  <a href="numbers.html#K2">COMPLEX</a> <b> such that </b><br/><a NAME="E4:47"/><i><font color="Green">E43</font></i>: 
 <a href="nat_3.html#K8" target="_self">Product</a> <span class="p1">(<span class="default"><font color="Maroon">a</font> <a href="polynom1.html#K9">+</a> <font color="Maroon">b</font></span>)</span> <a href="hidden.html#R1">=</a>  <a href="rvsum_1.html#K17">Product</a> <font color="Maroon">f</font>
 <b>and </b><br/><a NAME="E5:47"/><i><font color="Green">E47</font></i>: 
<font color="Maroon">f</font> <a href="hidden.html#R1">=</a> <span class="p1">(<span class="default"><font color="Maroon">a</font> <a href="polynom1.html#K9">+</a> <font color="Maroon">b</font></span>)</span> <a href="funct_1.html#NK3" target="_self">*</a> <span class="p1">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p2">(<span class="default"><a href="polynom2.html#K1">support</a> <span class="p3">(<span class="default"><font color="Maroon">a</font> <a href="polynom1.html#K9">+</a> <font color="Maroon">b</font></span>)</span></span>)</span></span>)</span>
 <b>by </b><i/>;<br/>
<b>consider </b><font color="Maroon">fa</font> being    <a href="finseq_1.html#M2">FinSequence</a> of  <a href="numbers.html#K2">COMPLEX</a> <b> such that </b><br/><a NAME="E7:47"/><i><font color="Green">E49</font></i>: 
 <a href="nat_3.html#K8" target="_self">Product</a> <font color="Maroon">a</font> <a href="hidden.html#R1">=</a>  <a href="rvsum_1.html#K17">Product</a> <font color="Maroon">fa</font>
 <b>and </b><br/><a NAME="E8:47"/><i><font color="Green">E50</font></i>: 
<font color="Maroon">fa</font> <a href="hidden.html#R1">=</a> <font color="Maroon">a</font> <a href="funct_1.html#NK3" target="_self">*</a> <span class="p1">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p2">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">a</font></span>)</span></span>)</span>
 <b>by </b><i/>;<br/>
<b>consider </b><font color="Maroon">fb</font> being    <a href="finseq_1.html#M2">FinSequence</a> of  <a href="numbers.html#K2">COMPLEX</a> <b> such that </b><br/><a NAME="E10:47"/><i><font color="Green">E51</font></i>: 
 <a href="nat_3.html#K8" target="_self">Product</a> <font color="Maroon">b</font> <a href="hidden.html#R1">=</a>  <a href="rvsum_1.html#K17">Product</a> <font color="Maroon">fb</font>
 <b>and </b><br/><a NAME="E11:47"/><i><font color="Green">E52</font></i>: 
<font color="Maroon">fb</font> <a href="hidden.html#R1">=</a> <font color="Maroon">b</font> <a href="funct_1.html#NK3" target="_self">*</a> <span class="p1">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p2">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">b</font></span>)</span></span>)</span>
 <b>by </b><i/>;<br/>
<b>set </b><font color="Maroon">g</font> = <font color="Maroon">fa</font> <a href="finseq_1.html#K8">^</a> <font color="Maroon">fb</font>;<br/>
<b>set </b><font color="Maroon">ca</font> =  <a href="uproots.html#K1">canFS</a> <span class="p1">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">a</font></span>)</span>;<br/>
<b>set </b><font color="Maroon">cb</font> =  <a href="uproots.html#K1">canFS</a> <span class="p1">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">b</font></span>)</span>;<br/>
<b>set </b><font color="Maroon">cg</font> = <span class="p1">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p2">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">a</font></span>)</span></span>)</span> <a href="finseq_1.html#K7">^</a> <span class="p1">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p2">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">b</font></span>)</span></span>)</span>;<br/>
<b>set </b><font color="Maroon">cf</font> =  <a href="uproots.html#K1">canFS</a> <span class="p1">(<span class="default"><a href="polynom2.html#K1">support</a> <span class="p2">(<span class="default"><font color="Maroon">a</font> <a href="polynom1.html#K9">+</a> <font color="Maroon">b</font></span>)</span></span>)</span>;<br/>
<b>set </b><font color="Maroon">p</font> = <span class="p1">(<span class="default"><span class="p2">(<span class="default"><span class="p3">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p4">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">a</font></span>)</span></span>)</span> <a href="finseq_1.html#K7">^</a> <span class="p3">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p4">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">b</font></span>)</span></span>)</span></span>)</span> <a href="funct_1.html#K2">"</a> </span>)</span> <a href="funct_1.html#NK3" target="_self">*</a> <span class="p1">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p2">(<span class="default"><a href="polynom2.html#K1">support</a> <span class="p3">(<span class="default"><font color="Maroon">a</font> <a href="polynom1.html#K9">+</a> <font color="Maroon">b</font></span>)</span></span>)</span></span>)</span>;<br/>
<a NAME="E12:47"/>
 <a href="finseq_1.html#K3">len</a> <span class="p1">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p2">(<span class="default"><a href="polynom2.html#K1">support</a> <span class="p3">(<span class="default"><font color="Maroon">a</font> <a href="polynom1.html#K9">+</a> <font color="Maroon">b</font></span>)</span></span>)</span></span>)</span> <a href="hidden.html#R1">=</a>  <a href="card_1.html#K4">card</a> <span class="p1">(<span class="default"><a href="polynom2.html#K1">support</a> <span class="p2">(<span class="default"><font color="Maroon">a</font> <a href="polynom1.html#K9">+</a> <font color="Maroon">b</font></span>)</span></span>)</span>
 
<b>by </b><i><a class="ref" href="uproots.html#D1">UPROOTS:def 1</a></i>;<br/>
<a NAME="E13:47"/><b>then </b><i><font color="Green">E53</font></i>: 
 <a href="finseq_1.html#K4">dom</a> <span class="p1">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p2">(<span class="default"><a href="polynom2.html#K1">support</a> <span class="p3">(<span class="default"><font color="Maroon">a</font> <a href="polynom1.html#K9">+</a> <font color="Maroon">b</font></span>)</span></span>)</span></span>)</span> <a href="hidden.html#R1">=</a>  <a href="finseq_1.html#K2">Seg</a> <span class="p1">(<span class="default"><a href="card_1.html#K4">card</a> <span class="p2">(<span class="default"><a href="polynom2.html#K1">support</a> <span class="p3">(<span class="default"><font color="Maroon">a</font> <a href="polynom1.html#K9">+</a> <font color="Maroon">b</font></span>)</span></span>)</span></span>)</span>
 
<b>by </b><i><a class="ref" href="finseq_1.html#D3">FINSEQ_1:def 3</a></i>;<br/>
<a NAME="E14:47"/><i><font color="Green">E69</font></i>: 
 <a href="relat_1.html#K2">rng</a> <span class="p1">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p2">(<span class="default"><a href="polynom2.html#K1">support</a> <span class="p3">(<span class="default"><font color="Maroon">a</font> <a href="polynom1.html#K9">+</a> <font color="Maroon">b</font></span>)</span></span>)</span></span>)</span> <a href="hidden.html#R1">=</a>  <a href="polynom2.html#K1">support</a> <span class="p1">(<span class="default"><font color="Maroon">a</font> <a href="polynom1.html#K9">+</a> <font color="Maroon">b</font></span>)</span>
 
<b>by </b><i><a class="ref" href="uproots.html#T5">UPROOTS:5</a></i>;<br/>
<a NAME="E15:47"/><i><font color="Green">E74</font></i>: 
 <a href="uproots.html#K1">canFS</a> <span class="p1">(<span class="default"><a href="polynom2.html#K1">support</a> <span class="p2">(<span class="default"><font color="Maroon">a</font> <a href="polynom1.html#K9">+</a> <font color="Maroon">b</font></span>)</span></span>)</span> is <a href="funct_1.html#V2">one-to-one</a>
 
<b>by </b><i><a class="ref" href="uproots.html#T4">UPROOTS:4</a></i>;<br/>
<a NAME="E16:47"/>
 <a href="relat_1.html#K1">dom</a> <span class="p1">(<span class="default"><font color="Maroon">a</font> <a href="polynom1.html#K9">+</a> <font color="Maroon">b</font></span>)</span> <a href="hidden.html#R1">=</a> <font color="Maroon">X</font>
 
<b>by </b><i><a class="ref" href="pboole.html#D3">PBOOLE:def 3</a></i>;<br/>
<a NAME="E17:47"/><b>then </b><i><font color="Green">E103</font></i>: 
 <a href="finseq_1.html#K4">dom</a> <font color="Maroon">f</font> <a href="hidden.html#R1">=</a>  <a href="finseq_1.html#K2">Seg</a> <span class="p1">(<span class="default"><a href="card_1.html#K4">card</a> <span class="p2">(<span class="default"><a href="polynom2.html#K1">support</a> <span class="p3">(<span class="default"><font color="Maroon">a</font> <a href="polynom1.html#K9">+</a> <font color="Maroon">b</font></span>)</span></span>)</span></span>)</span>
 
<b>by </b><i>, , , <a class="ref" href="relat_1.html#T46">RELAT_1:46</a></i>;<br/>
<a NAME="E18:47"/><i><font color="Green">E104</font></i>: 
 <a href="finseq_1.html#K3">len</a> <span class="p1">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p2">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">b</font></span>)</span></span>)</span> <a href="hidden.html#R1">=</a>  <a href="card_1.html#K4">card</a> <span class="p1">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">b</font></span>)</span>
 
<b>by </b><i><a class="ref" href="uproots.html#D1">UPROOTS:def 1</a></i>;<br/>
<a NAME="E19:47"/><i><font color="Green">E105</font></i>: 
 <a href="finseq_1.html#K3">len</a> <span class="p1">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p2">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">a</font></span>)</span></span>)</span> <a href="hidden.html#R1">=</a>  <a href="card_1.html#K4">card</a> <span class="p1">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">a</font></span>)</span>
 
<b>by </b><i><a class="ref" href="uproots.html#D1">UPROOTS:def 1</a></i>;<br/>
<a NAME="E20:47"/><i><font color="Green">E106</font></i>: 
 <a href="polynom2.html#K1">support</a> <span class="p1">(<span class="default"><font color="Maroon">a</font> <a href="polynom1.html#K9">+</a> <font color="Maroon">b</font></span>)</span> <a href="hidden.html#R1">=</a> <span class="p1">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">a</font></span>)</span> <a href="subset_1.html#K4">\/</a> <span class="p1">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">b</font></span>)</span>
 
<b>by </b><i><a class="ref" href="polynom1.html#T42">POLYNOM1:42</a></i>;<br/>
<a NAME="E21:47"/><i><font color="Green">E107</font></i>: 
 <a href="relat_1.html#K2">rng</a> <span class="p1">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p2">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">b</font></span>)</span></span>)</span> <a href="hidden.html#R1">=</a>  <a href="polynom2.html#K1">support</a> <font color="Maroon">b</font>
 
<b>by </b><i><a class="ref" href="uproots.html#T5">UPROOTS:5</a></i>;<br/>
<a NAME="E22:47"/><i><font color="Green">E108</font></i>: 
 <a href="relat_1.html#K2">rng</a> <span class="p1">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p2">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">a</font></span>)</span></span>)</span> <a href="hidden.html#R1">=</a>  <a href="polynom2.html#K1">support</a> <font color="Maroon">a</font>
 
<b>by </b><i><a class="ref" href="uproots.html#T5">UPROOTS:5</a></i>;<br/>
<a NAME="E23:47"/><i><font color="Green">E109</font></i>: 
 <a href="uproots.html#K1">canFS</a> <span class="p1">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">b</font></span>)</span> is <a href="funct_1.html#V2">one-to-one</a>
 
<b>by </b><i><a class="ref" href="uproots.html#T4">UPROOTS:4</a></i>;<br/>
<a NAME="E24:47"/><i><font color="Green">E110</font></i>: 
 <a href="uproots.html#K1">canFS</a> <span class="p1">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">a</font></span>)</span> is <a href="funct_1.html#V2">one-to-one</a>
 
<b>by </b><i><a class="ref" href="uproots.html#T4">UPROOTS:4</a></i>;<br/>
<i><font color="Green">E111</font></i>:  <a href="finseq_1.html#K3">len</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p3">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">a</font></span>)</span></span>)</span> <a href="finseq_1.html#K7">^</a> <span class="p2">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p3">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">b</font></span>)</span></span>)</span></span>)</span> = 
<span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="card_1.html#K4">card</a> <span class="p3">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">a</font></span>)</span></span>)</span> <a href="binop_2.html#K23">+</a> <span class="p2">(<span class="default"><a href="card_1.html#K4">card</a> <span class="p3">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">b</font></span>)</span></span>)</span></span>)</span> <a href="xcmplx_0.html#K6">-</a> <span class="p1">(<span class="default"><a href="card_1.html#K4">card</a> <a href="xboole_0.html#K1">{}</a> </span>)</span>
<b>by </b><i><a class="txt" href="nat_3.html#E1"><i><font color="Green">Lemma33</font></i></a>, , <a class="ref" href="finseq_1.html#T35">FINSEQ_1:35</a></i>
<br/>.= 
 <a href="card_1.html#K4">card</a> <span class="p1">(<span class="default"><a href="polynom2.html#K1">support</a> <span class="p2">(<span class="default"><font color="Maroon">a</font> <a href="polynom1.html#K9">+</a> <font color="Maroon">b</font></span>)</span></span>)</span>
<b>by </b><i>, , <a class="ref" href="card_2.html#T64">CARD_2:64</a></i>
;<br/>
<a NAME="E26:47"/><b>then </b><i><font color="Green">E112</font></i>: 
 <a href="finseq_1.html#K4">dom</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p3">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">a</font></span>)</span></span>)</span> <a href="finseq_1.html#K7">^</a> <span class="p2">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p3">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">b</font></span>)</span></span>)</span></span>)</span> <a href="hidden.html#R1">=</a>  <a href="finseq_1.html#K2">Seg</a> <span class="p1">(<span class="default"><a href="card_1.html#K4">card</a> <span class="p2">(<span class="default"><a href="polynom2.html#K1">support</a> <span class="p3">(<span class="default"><font color="Maroon">a</font> <a href="polynom1.html#K9">+</a> <font color="Maroon">b</font></span>)</span></span>)</span></span>)</span>
 
<b>by </b><i><a class="ref" href="finseq_1.html#D3">FINSEQ_1:def 3</a></i>;<br/>
<a NAME="E27:47"/><i><font color="Green">E113</font></i>: 
 <a href="relat_1.html#K2">rng</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p3">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">a</font></span>)</span></span>)</span> <a href="finseq_1.html#K7">^</a> <span class="p2">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p3">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">b</font></span>)</span></span>)</span></span>)</span> <a href="hidden.html#R1">=</a>  <a href="polynom2.html#K1">support</a> <span class="p1">(<span class="default"><font color="Maroon">a</font> <a href="polynom1.html#K9">+</a> <font color="Maroon">b</font></span>)</span>
 
<b>by </b><i>, , , <a class="ref" href="finseq_1.html#T44">FINSEQ_1:44</a></i>;<br/>
<a NAME="E28:47"/><b>then </b><i><font color="Green">E114</font></i>: 
<span class="p1">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p2">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">a</font></span>)</span></span>)</span> <a href="finseq_1.html#K7">^</a> <span class="p1">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p2">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">b</font></span>)</span></span>)</span> is <a href="funct_1.html#V2">one-to-one</a>
 
<b>by </b><i>, <a class="ref" href="finseq_4.html#T77">FINSEQ_4:77</a></i>;<br/>
<a NAME="E29:47"/><b>then </b><i><font color="Green">E115</font></i>: 
 <a href="relat_1.html#K1">dom</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><span class="p3">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p4">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">a</font></span>)</span></span>)</span> <a href="finseq_1.html#K7">^</a> <span class="p3">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p4">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">b</font></span>)</span></span>)</span></span>)</span> <a href="funct_1.html#K2">"</a> </span>)</span> <a href="hidden.html#R1">=</a>  <a href="polynom2.html#K1">support</a> <span class="p1">(<span class="default"><font color="Maroon">a</font> <a href="polynom1.html#K9">+</a> <font color="Maroon">b</font></span>)</span>
 
<b>by </b><i>, <a class="ref" href="funct_1.html#T55">FUNCT_1:55</a></i>;<br/>
<a NAME="E30:47"/><i><font color="Green">E116</font></i>: 
 <a href="relat_1.html#K2">rng</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><span class="p3">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p4">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">a</font></span>)</span></span>)</span> <a href="finseq_1.html#K7">^</a> <span class="p3">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p4">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">b</font></span>)</span></span>)</span></span>)</span> <a href="funct_1.html#K2">"</a> </span>)</span> <a href="hidden.html#R1">=</a>  <a href="finseq_1.html#K2">Seg</a> <span class="p1">(<span class="default"><a href="card_1.html#K4">card</a> <span class="p2">(<span class="default"><a href="polynom2.html#K1">support</a> <span class="p3">(<span class="default"><font color="Maroon">a</font> <a href="polynom1.html#K9">+</a> <font color="Maroon">b</font></span>)</span></span>)</span></span>)</span>
 
<b>by </b><i><a class="txt" href="nat_3.html#E2:47"><i><font color="Green">E41</font></i></a>, <a class="txt" href="nat_3.html#E4:47"><i><font color="Green">E43</font></i></a>, <a class="ref" href="funct_1.html#T55">FUNCT_1:55</a></i>;<br/>
<a NAME="E31:47"/><i><font color="Green">E117</font></i>: 
 <a href="relat_1.html#K1">dom</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p3">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">b</font></span>)</span></span>)</span> <a href="funct_1.html#K2">"</a> </span>)</span> <a href="hidden.html#R1">=</a>  <a href="polynom2.html#K1">support</a> <font color="Maroon">b</font>
 
<b>by </b><i>, <a class="ref" href="nat_3.html#T1" target="_self">Th1</a>, <a class="ref" href="funct_1.html#T54">FUNCT_1:54</a></i>;<br/>
<a NAME="E32:47"/><i><font color="Green">E118</font></i>: 
 <a href="finseq_1.html#K4">dom</a> <span class="p1">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p2">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">b</font></span>)</span></span>)</span> <a href="hidden.html#R1">=</a>  <a href="finseq_1.html#K2">Seg</a> <span class="p1">(<span class="default"><a href="card_1.html#K4">card</a> <span class="p2">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">b</font></span>)</span></span>)</span>
 
<b>by </b><i><a class="txt" href="nat_3.html#E1"><i><font color="Green">Lemma33</font></i></a>, <a class="ref" href="finseq_1.html#D3">FINSEQ_1:def 3</a></i>;<br/>
<a NAME="E33:47"/><i><font color="Green">E119</font></i>: 
 <a href="relat_1.html#K2">rng</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p3">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">b</font></span>)</span></span>)</span> <a href="funct_1.html#K2">"</a> </span>)</span> <a href="hidden.html#R1">=</a>  <a href="finseq_1.html#K4">dom</a> <span class="p1">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p2">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">b</font></span>)</span></span>)</span>
 
<b>by </b><i><a class="ref" href="nat_3.html#T1" target="_self">Th1</a>, <a class="ref" href="funct_1.html#T55">FUNCT_1:55</a></i>;<br/>
<a NAME="E34:47"/><i><font color="Green">E120</font></i>: 
 <a href="relat_1.html#K1">dom</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p3">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">a</font></span>)</span></span>)</span> <a href="funct_1.html#K2">"</a> </span>)</span> <a href="hidden.html#R1">=</a>  <a href="polynom2.html#K1">support</a> <font color="Maroon">a</font>
 
<b>by </b><i>, , <a class="ref" href="funct_1.html#T54">FUNCT_1:54</a></i>;<br/>
<a NAME="E35:47"/><i><font color="Green">E121</font></i>: 
 <a href="finseq_1.html#K4">dom</a> <span class="p1">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p2">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">a</font></span>)</span></span>)</span> <a href="hidden.html#R1">=</a>  <a href="finseq_1.html#K2">Seg</a> <span class="p1">(<span class="default"><a href="card_1.html#K4">card</a> <span class="p2">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">a</font></span>)</span></span>)</span>
 
<b>by </b><i>, <a class="ref" href="finseq_1.html#D3">FINSEQ_1:def 3</a></i>;<br/>
<a NAME="E36:47"/><i><font color="Green">E122</font></i>: 
 <a href="relat_1.html#K2">rng</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p3">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">a</font></span>)</span></span>)</span> <a href="funct_1.html#K2">"</a> </span>)</span> <a href="hidden.html#R1">=</a>  <a href="finseq_1.html#K4">dom</a> <span class="p1">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p2">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">a</font></span>)</span></span>)</span>
 
<b>by </b><i>, <a class="ref" href="funct_1.html#T55">FUNCT_1:55</a></i>;<br/>
<a NAME="E37:47"/>
 <a href="relat_1.html#K1">dom</a> <font color="Maroon">a</font> <a href="hidden.html#R1">=</a> <font color="Maroon">X</font>
 
<b>by </b><i><a class="ref" href="pboole.html#D3">PBOOLE:def 3</a></i>;<br/>
<a NAME="E38:47"/><b>then </b><i><font color="Green">E123</font></i>: 
 <a href="finseq_1.html#K4">dom</a> <span class="p1">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p2">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">a</font></span>)</span></span>)</span> <a href="hidden.html#R1">=</a>  <a href="finseq_1.html#K4">dom</a> <font color="Maroon">fa</font>
 
<b>by </b><i>, , <a class="ref" href="relat_1.html#T46">RELAT_1:46</a></i>;<br/>
<a NAME="E39:47"/><b>then </b><i><font color="Green">E124</font></i>: 
 <a href="finseq_1.html#K3">len</a> <span class="p1">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p2">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">a</font></span>)</span></span>)</span> <a href="hidden.html#R1">=</a>  <a href="finseq_1.html#K3">len</a> <font color="Maroon">fa</font>
 
<b>by </b><i><a class="ref" href="finseq_3.html#T31">FINSEQ_3:31</a></i>;<br/>
<a NAME="E40:47"/>
 <a href="relat_1.html#K1">dom</a> <font color="Maroon">b</font> <a href="hidden.html#R1">=</a> <font color="Maroon">X</font>
 
<b>by </b><i><a class="ref" href="pboole.html#D3">PBOOLE:def 3</a></i>;<br/>
<a NAME="E41:47"/><b>then </b>
 <a href="finseq_1.html#K4">dom</a> <span class="p1">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p2">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">b</font></span>)</span></span>)</span> <a href="hidden.html#R1">=</a>  <a href="finseq_1.html#K4">dom</a> <font color="Maroon">fb</font>
 
<b>by </b><i>, , <a class="ref" href="relat_1.html#T46">RELAT_1:46</a></i>;<br/>
<a NAME="E42:47"/><b>then </b><i><font color="Green">E125</font></i>: 
 <a href="finseq_1.html#K3">len</a> <span class="p1">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p2">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">b</font></span>)</span></span>)</span> <a href="hidden.html#R1">=</a>  <a href="finseq_1.html#K3">len</a> <font color="Maroon">fb</font>
 
<b>by </b><i><a class="ref" href="finseq_3.html#T31">FINSEQ_3:31</a></i>;<br/>
<a NAME="E43:47"/><i><font color="Green">E126</font></i>: 
 <a href="finseq_1.html#K3">len</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p3">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">a</font></span>)</span></span>)</span> <a href="finseq_1.html#K7">^</a> <span class="p2">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p3">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">b</font></span>)</span></span>)</span></span>)</span> <a href="hidden.html#R1">=</a> <span class="p1">(<span class="default"><a href="finseq_1.html#K3">len</a> <span class="p2">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p3">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">a</font></span>)</span></span>)</span></span>)</span> <a href="binop_2.html#K23">+</a> <span class="p1">(<span class="default"><a href="finseq_1.html#K3">len</a> <span class="p2">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p3">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">b</font></span>)</span></span>)</span></span>)</span>
 
<b>by </b><i><a class="ref" href="finseq_1.html#T35">FINSEQ_1:35</a></i>;<br/>
<a NAME="E44:47"/><i><font color="Green">E127</font></i>: 
 <a href="relat_1.html#K1">dom</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><span class="p3">(<span class="default"><span class="p4">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p5">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">a</font></span>)</span></span>)</span> <a href="finseq_1.html#K7">^</a> <span class="p4">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p5">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">b</font></span>)</span></span>)</span></span>)</span> <a href="funct_1.html#K2">"</a> </span>)</span> <a href="funct_1.html#NK3" target="_self">*</a> <span class="p2">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p3">(<span class="default"><a href="polynom2.html#K1">support</a> <span class="p4">(<span class="default"><font color="Maroon">a</font> <a href="polynom1.html#K9">+</a> <font color="Maroon">b</font></span>)</span></span>)</span></span>)</span></span>)</span> <a href="hidden.html#R1">=</a>  <a href="finseq_1.html#K2">Seg</a> <span class="p1">(<span class="default"><a href="card_1.html#K4">card</a> <span class="p2">(<span class="default"><a href="polynom2.html#K1">support</a> <span class="p3">(<span class="default"><font color="Maroon">a</font> <a href="polynom1.html#K9">+</a> <font color="Maroon">b</font></span>)</span></span>)</span></span>)</span>
 
<b>by </b><i>, , <a class="ref" href="nat_3.html#T2" target="_self">Th2</a>, <a class="ref" href="relat_1.html#T46">RELAT_1:46</a></i>;<br/>
 <a href="finseq_1.html#K3">len</a> <span class="p1">(<span class="default"><font color="Maroon">fa</font> <a href="finseq_1.html#K8">^</a> <font color="Maroon">fb</font></span>)</span> = 
<span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="card_1.html#K4">card</a> <span class="p3">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">a</font></span>)</span></span>)</span> <a href="binop_2.html#K23">+</a> <span class="p2">(<span class="default"><a href="card_1.html#K4">card</a> <span class="p3">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">b</font></span>)</span></span>)</span></span>)</span> <a href="xcmplx_0.html#K6">-</a> <span class="p1">(<span class="default"><a href="card_1.html#K4">card</a> <a href="xboole_0.html#K1">{}</a> </span>)</span>
<b>by </b><i><a class="txt" href="nat_3.html#E1"><i><font color="Green">Lemma33</font></i></a>, , <a class="txt" href="nat_3.html#E13:47"><i><font color="Green">E53</font></i></a>, <a class="ref" href="nat_3.html#T3" target="_self">Th3</a>, <a class="ref" href="finseq_1.html#T35">FINSEQ_1:35</a></i>
<br/>.= 
 <a href="card_1.html#K4">card</a> <span class="p1">(<span class="default"><a href="polynom2.html#K1">support</a> <span class="p2">(<span class="default"><font color="Maroon">a</font> <a href="polynom1.html#K9">+</a> <font color="Maroon">b</font></span>)</span></span>)</span>
<b>by </b><i>, , <a class="ref" href="card_2.html#T64">CARD_2:64</a></i>
;<br/>
<a NAME="E46:47"/><b>then </b><i><font color="Green">E128</font></i>: 
 <a href="finseq_1.html#K4">dom</a> <span class="p1">(<span class="default"><font color="Maroon">fa</font> <a href="finseq_1.html#K8">^</a> <font color="Maroon">fb</font></span>)</span> <a href="hidden.html#R1">=</a>  <a href="finseq_1.html#K2">Seg</a> <span class="p1">(<span class="default"><a href="card_1.html#K4">card</a> <span class="p2">(<span class="default"><a href="polynom2.html#K1">support</a> <span class="p3">(<span class="default"><font color="Maroon">a</font> <a href="polynom1.html#K9">+</a> <font color="Maroon">b</font></span>)</span></span>)</span></span>)</span>
 
<b>by </b><i><a class="ref" href="finseq_1.html#D3">FINSEQ_1:def 3</a></i>;<br/>
<a NAME="E47:47"/><i><font color="Green">E129</font></i>: 
 <a href="relat_1.html#K2">rng</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><span class="p3">(<span class="default"><span class="p4">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p5">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">a</font></span>)</span></span>)</span> <a href="finseq_1.html#K7">^</a> <span class="p4">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p5">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">b</font></span>)</span></span>)</span></span>)</span> <a href="funct_1.html#K2">"</a> </span>)</span> <a href="funct_1.html#NK3" target="_self">*</a> <span class="p2">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p3">(<span class="default"><a href="polynom2.html#K1">support</a> <span class="p4">(<span class="default"><font color="Maroon">a</font> <a href="polynom1.html#K9">+</a> <font color="Maroon">b</font></span>)</span></span>)</span></span>)</span></span>)</span> <a href="hidden.html#R1">=</a>  <a href="relat_1.html#K2">rng</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><span class="p3">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p4">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">a</font></span>)</span></span>)</span> <a href="finseq_1.html#K7">^</a> <span class="p3">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p4">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">b</font></span>)</span></span>)</span></span>)</span> <a href="funct_1.html#K2">"</a> </span>)</span>
 
<b>by </b><i>, <a class="ref" href="nat_3.html#T2" target="_self">Th2</a>, <a class="ref" href="relat_1.html#T47">RELAT_1:47</a></i>;<br/>
<b>then reconsider </b><font color="Maroon">p</font> = <span class="p1">(<span class="default"><span class="p2">(<span class="default"><span class="p3">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p4">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">a</font></span>)</span></span>)</span> <a href="finseq_1.html#K7">^</a> <span class="p3">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p4">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">b</font></span>)</span></span>)</span></span>)</span> <a href="funct_1.html#K2">"</a> </span>)</span> <a href="funct_1.html#NK3" target="_self">*</a> <span class="p1">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p2">(<span class="default"><a href="polynom2.html#K1">support</a> <span class="p3">(<span class="default"><font color="Maroon">a</font> <a href="polynom1.html#K9">+</a> <font color="Maroon">b</font></span>)</span></span>)</span></span>)</span> as   <a href="funct_2.html#NM1">Function</a> of  <a href="finseq_1.html#K4">dom</a> <span class="p1">(<span class="default"><font color="Maroon">fa</font> <a href="finseq_1.html#K8">^</a> <font color="Maroon">fb</font></span>)</span>, <a href="finseq_1.html#K4">dom</a> <span class="p1">(<span class="default"><font color="Maroon">fa</font> <a href="finseq_1.html#K8">^</a> <font color="Maroon">fb</font></span>)</span> <b>by </b><i>, , , <a class="ref" href="funct_2.html#T3">FUNCT_2:3</a></i>;<br/>
<a NAME="E49:47"/>
<span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p3">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">a</font></span>)</span></span>)</span> <a href="finseq_1.html#K7">^</a> <span class="p2">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p3">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">b</font></span>)</span></span>)</span></span>)</span> <a href="funct_1.html#K2">"</a>  is <a href="funct_1.html#V2">one-to-one</a>
 
<b>by </b><i><a class="txt" href="nat_3.html#E4:47"><i><font color="Green">E43</font></i></a>, <a class="ref" href="funct_1.html#T62">FUNCT_1:62</a></i>;<br/>
<a NAME="E50:47"/><b>then </b><i><font color="Green">E130</font></i>: 
<font color="Maroon">p</font> is <a href="funct_1.html#V2">one-to-one</a>
 
<b>by </b><i>, <a class="ref" href="funct_1.html#T46">FUNCT_1:46</a></i>;<br/>
<a NAME="E51:47"/>
<font color="Maroon">p</font> is <a href="funct_2.html#V2">onto</a>
 
<b>by </b><i>, , , <a class="ref" href="funct_2.html#D3">FUNCT_2:def 3</a></i>;<br/>
<b>then reconsider </b><font color="Maroon">p</font> = <font color="Maroon">p</font> as   <a href="funct_2.html#NM2">Permutation</a> of  <a href="finseq_1.html#K4">dom</a> <span class="p1">(<span class="default"><font color="Maroon">fa</font> <a href="finseq_1.html#K8">^</a> <font color="Maroon">fb</font></span>)</span> <b>by </b><i><a class="ref" href="nat_3.html#T5" target="_self">Th5</a>, <a class="ref" href="funct_2.html#D4">FUNCT_2:def 4</a></i>;<br/>
<a NAME="E53:47"/><i><font color="Green">E131</font></i>: 
 <a href="relat_1.html#K1">dom</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><font color="Maroon">fa</font> <a href="finseq_1.html#K8">^</a> <font color="Maroon">fb</font></span>)</span> <a href="funct_1.html#NK3" target="_self">*</a> <font color="Maroon">p</font></span>)</span> <a href="hidden.html#R1">=</a>  <a href="finseq_1.html#K2">Seg</a> <span class="p1">(<span class="default"><a href="card_1.html#K4">card</a> <span class="p2">(<span class="default"><a href="polynom2.html#K1">support</a> <span class="p3">(<span class="default"><font color="Maroon">a</font> <a href="polynom1.html#K9">+</a> <font color="Maroon">b</font></span>)</span></span>)</span></span>)</span>
 
<b>by </b><i>, , , , <a class="ref" href="relat_1.html#T46">RELAT_1:46</a></i>;<br/>
<div><a class="txt" onclick="hs2(this)" href="javascript:()" title="47_3"><b>now </b></a><div class="add"><b>let </b><font color="Maroon">x</font> be    <a href="hidden.html#M1">set</a> ;<br/><b>assume </b><a NAME="E1:47_3"/><i><font color="Green">E132</font></i>: 
<font color="Maroon">x</font> <a href="hidden.html#R2">in</a>  <a href="finseq_1.html#K4">dom</a> <font color="Maroon">f</font>
 ;<br/><b>set </b><font color="Maroon">cgx</font> = <span class="p1">(<span class="default"><span class="p2">(<span class="default"><span class="p3">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p4">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">a</font></span>)</span></span>)</span> <a href="finseq_1.html#K7">^</a> <span class="p3">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p4">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">b</font></span>)</span></span>)</span></span>)</span> <a href="funct_1.html#K2">"</a> </span>)</span> <a href="funct_1.html#K1">.</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p3">(<span class="default"><a href="polynom2.html#K1">support</a> <span class="p4">(<span class="default"><font color="Maroon">a</font> <a href="polynom1.html#K9">+</a> <font color="Maroon">b</font></span>)</span></span>)</span></span>)</span> <a href="funct_1.html#K1">.</a> <font color="Maroon">x</font></span>)</span>;<br/><i><font color="Green">E134</font></i>: <span class="p1">(<span class="default"><span class="p2">(<span class="default"><font color="Maroon">fa</font> <a href="finseq_1.html#K8">^</a> <font color="Maroon">fb</font></span>)</span> <a href="funct_1.html#NK3" target="_self">*</a> <font color="Maroon">p</font></span>)</span> <a href="funct_1.html#K1">.</a> <font color="Maroon">x</font> = 
<span class="p1">(<span class="default"><font color="Maroon">fa</font> <a href="finseq_1.html#K8">^</a> <font color="Maroon">fb</font></span>)</span> <a href="funct_1.html#K1">.</a> <span class="p1">(<span class="default"><font color="Maroon">p</font> <a href="seq_1.html#K2">.</a> <font color="Maroon">x</font></span>)</span>
<b>by </b><i>, <a class="ref" href="nat_3.html#T6" target="_self">Th6</a>, , <a class="ref" href="funct_1.html#T22">FUNCT_1:22</a></i>
<br/>.= 
<span class="p1">(<span class="default"><font color="Maroon">fa</font> <a href="finseq_1.html#K8">^</a> <font color="Maroon">fb</font></span>)</span> <a href="funct_1.html#K1">.</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><span class="p3">(<span class="default"><span class="p4">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p5">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">a</font></span>)</span></span>)</span> <a href="finseq_1.html#K7">^</a> <span class="p4">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p5">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">b</font></span>)</span></span>)</span></span>)</span> <a href="funct_1.html#K2">"</a> </span>)</span> <a href="funct_1.html#K1">.</a> <span class="p2">(<span class="default"><span class="p3">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p4">(<span class="default"><a href="polynom2.html#K1">support</a> <span class="p5">(<span class="default"><font color="Maroon">a</font> <a href="polynom1.html#K9">+</a> <font color="Maroon">b</font></span>)</span></span>)</span></span>)</span> <a href="funct_1.html#K1">.</a> <font color="Maroon">x</font></span>)</span></span>)</span>
<b>by </b><i>, , , <a class="ref" href="funct_1.html#T23">FUNCT_1:23</a></i>
;<br/><a NAME="E3:47_3"/><i><font color="Green">E135</font></i>: 
<span class="p1">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p2">(<span class="default"><a href="polynom2.html#K1">support</a> <span class="p3">(<span class="default"><font color="Maroon">a</font> <a href="polynom1.html#K9">+</a> <font color="Maroon">b</font></span>)</span></span>)</span></span>)</span> <a href="funct_1.html#K1">.</a> <font color="Maroon">x</font> <a href="hidden.html#R2">in</a>  <a href="polynom2.html#K1">support</a> <span class="p1">(<span class="default"><font color="Maroon">a</font> <a href="polynom1.html#K9">+</a> <font color="Maroon">b</font></span>)</span>
 <b>by </b><i>, , , , <a class="ref" href="funct_1.html#T12">FUNCT_1:12</a></i>;<br/><a NAME="E4:47_3"/><b>then </b>
<span class="p1">(<span class="default"><span class="p2">(<span class="default"><span class="p3">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p4">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">a</font></span>)</span></span>)</span> <a href="finseq_1.html#K7">^</a> <span class="p3">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p4">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">b</font></span>)</span></span>)</span></span>)</span> <a href="funct_1.html#K2">"</a> </span>)</span> <a href="funct_1.html#K1">.</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p3">(<span class="default"><a href="polynom2.html#K1">support</a> <span class="p4">(<span class="default"><font color="Maroon">a</font> <a href="polynom1.html#K9">+</a> <font color="Maroon">b</font></span>)</span></span>)</span></span>)</span> <a href="funct_1.html#K1">.</a> <font color="Maroon">x</font></span>)</span> <a href="hidden.html#R2">in</a>  <a href="finseq_1.html#K2">Seg</a> <span class="p1">(<span class="default"><a href="card_1.html#K4">card</a> <span class="p2">(<span class="default"><a href="polynom2.html#K1">support</a> <span class="p3">(<span class="default"><font color="Maroon">a</font> <a href="polynom1.html#K9">+</a> <font color="Maroon">b</font></span>)</span></span>)</span></span>)</span>
 <b>by </b><i><a class="ref" href="nat_3.html#T2" target="_self">Th2</a>, , <a class="ref" href="funct_1.html#T12">FUNCT_1:12</a></i>;<br/><b>then reconsider </b><font color="Maroon">cgx</font> = <span class="p1">(<span class="default"><span class="p2">(<span class="default"><span class="p3">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p4">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">a</font></span>)</span></span>)</span> <a href="finseq_1.html#K7">^</a> <span class="p3">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p4">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">b</font></span>)</span></span>)</span></span>)</span> <a href="funct_1.html#K2">"</a> </span>)</span> <a href="funct_1.html#K1">.</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p3">(<span class="default"><a href="polynom2.html#K1">support</a> <span class="p4">(<span class="default"><font color="Maroon">a</font> <a href="polynom1.html#K9">+</a> <font color="Maroon">b</font></span>)</span></span>)</span></span>)</span> <a href="funct_1.html#K1">.</a> <font color="Maroon">x</font></span>)</span> as  <a href="ordinal1.html#V7">natural</a>  <a href="ordinal1.html#NM1" target="_self">number</a>  <b>by </b><i/>;<br/><b>reconsider </b><font color="Maroon">cgxN</font> = <font color="Maroon">cgx</font> as   <a href="nat_1.html#NM1">Nat</a> ;<br/><b>consider </b><font color="Maroon">d</font> being    <a href="hidden.html#M1">set</a> <b> such that </b><br/><a NAME="E8:47_3"/><i><font color="Green">E137</font></i>: 
<font color="Maroon">d</font> <a href="hidden.html#R2">in</a>  <a href="finseq_1.html#K4">dom</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p3">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">a</font></span>)</span></span>)</span> <a href="finseq_1.html#K7">^</a> <span class="p2">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p3">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">b</font></span>)</span></span>)</span></span>)</span>
 <b>and </b><br/><a NAME="E9:47_3"/><i><font color="Green">E138</font></i>: 
<span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p3">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">a</font></span>)</span></span>)</span> <a href="finseq_1.html#K7">^</a> <span class="p2">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p3">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">b</font></span>)</span></span>)</span></span>)</span> <a href="funct_1.html#K1">.</a> <font color="Maroon">d</font> <a href="hidden.html#R1">=</a> <span class="p1">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p2">(<span class="default"><a href="polynom2.html#K1">support</a> <span class="p3">(<span class="default"><font color="Maroon">a</font> <a href="polynom1.html#K9">+</a> <font color="Maroon">b</font></span>)</span></span>)</span></span>)</span> <a href="funct_1.html#K1">.</a> <font color="Maroon">x</font>
 <b>by </b><i>, , <a class="ref" href="funct_1.html#D5">FUNCT_1:def 5</a></i>;<br/><a NAME="E10:47_3"/><i><font color="Green">E139</font></i>: 
<font color="Maroon">cgx</font> <a href="hidden.html#R1">=</a> <font color="Maroon">d</font>
 <b>by </b><i><a class="txt" href="nat_3.html#E4:47"><i><font color="Green">E43</font></i></a>, , <a class="ref" href="nat_3.html#D1" target="_self">Def1</a>, <a class="ref" href="funct_1.html#T56">FUNCT_1:56</a></i>;<br/><a NAME="E11:47_3"/><b>then </b><i><font color="Green">E140</font></i>: 
<font color="Maroon">cgxN</font> <a href="xxreal_0.html#R1">&lt;=</a> <span class="p1">(<span class="default"><a href="finseq_1.html#K3">len</a> <font color="Maroon">fa</font></span>)</span> <a href="binop_2.html#K23">+</a> <span class="p1">(<span class="default"><a href="finseq_1.html#K3">len</a> <font color="Maroon">fb</font></span>)</span>
 <b>by </b><i><a class="txt" href="nat_3.html#E13:47"><i><font color="Green">E53</font></i></a>, <a class="ref" href="nat_3.html#T3" target="_self">Th3</a>, <a class="ref" href="nat_3.html#T4" target="_self">Th4</a>, , <a class="ref" href="finseq_3.html#T27">FINSEQ_3:27</a></i>;<br/><a NAME="E12:47_3"/><i><font color="Green">E141</font></i>: 
1 <a href="xxreal_0.html#R1">&lt;=</a> <font color="Maroon">cgxN</font>
 <b>by </b><i>, , <a class="ref" href="finseq_3.html#T27">FINSEQ_3:27</a></i>;<br/><div><a class="txt" onclick="hsNdiv(this)" href="javascript:()" title="47_3_2"><b>per </b></a><a class="txt" onclick="hs(this)" href="javascript:()"><b>cases </b></a><span class="hide"><a NAME="E1:47_3_2"/>
( <span class="p1">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p2">(<span class="default"><a href="polynom2.html#K1">support</a> <span class="p3">(<span class="default"><font color="Maroon">a</font> <a href="polynom1.html#K9">+</a> <font color="Maroon">b</font></span>)</span></span>)</span></span>)</span> <a href="funct_1.html#K1">.</a> <font color="Maroon">x</font> <a href="hidden.html#R2">in</a>  <a href="polynom2.html#K1">support</a> <font color="Maroon">a</font> or <span class="p1">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p2">(<span class="default"><a href="polynom2.html#K1">support</a> <span class="p3">(<span class="default"><font color="Maroon">a</font> <a href="polynom1.html#K9">+</a> <font color="Maroon">b</font></span>)</span></span>)</span></span>)</span> <a href="funct_1.html#K1">.</a> <font color="Maroon">x</font> <a href="hidden.html#R2">in</a>  <a href="polynom2.html#K1">support</a> <font color="Maroon">b</font> )
 </span><b>by </b><i>, , <a class="ref" href="xboole_0.html#D2">XBOOLE_0:def 2</a></i>;<br/><div class="add"><div><a class="txt" onclick="hsNdiv(this)" href="javascript:()" title="47_3_2_1"><b>suppose </b></a><a NAME="E1:47_3_2_1"/><i><font color="Green">E142</font></i>: 
<span class="p1">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p2">(<span class="default"><a href="polynom2.html#K1">support</a> <span class="p3">(<span class="default"><font color="Maroon">a</font> <a href="polynom1.html#K9">+</a> <font color="Maroon">b</font></span>)</span></span>)</span></span>)</span> <a href="funct_1.html#K1">.</a> <font color="Maroon">x</font> <a href="hidden.html#R2">in</a>  <a href="polynom2.html#K1">support</a> <font color="Maroon">a</font>
 ;<br/><div class="add"><a NAME="E2:47_3_2_1"/><b>then </b><i><font color="Green">E143</font></i>: 
not <span class="p1">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p2">(<span class="default"><a href="polynom2.html#K1">support</a> <span class="p3">(<span class="default"><font color="Maroon">a</font> <a href="polynom1.html#K9">+</a> <font color="Maroon">b</font></span>)</span></span>)</span></span>)</span> <a href="funct_1.html#K1">.</a> <font color="Maroon">x</font> <a href="hidden.html#R2">in</a>  <a href="polynom2.html#K1">support</a> <font color="Maroon">b</font>
 <b>by </b><i>, <a class="ref" href="xboole_0.html#D3">XBOOLE_0:def 3</a></i>;<br/><b>set </b><font color="Maroon">cax</font> = <span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p3">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">a</font></span>)</span></span>)</span> <a href="funct_1.html#K2">"</a> </span>)</span> <a href="funct_1.html#K1">.</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p3">(<span class="default"><a href="polynom2.html#K1">support</a> <span class="p4">(<span class="default"><font color="Maroon">a</font> <a href="polynom1.html#K9">+</a> <font color="Maroon">b</font></span>)</span></span>)</span></span>)</span> <a href="funct_1.html#K1">.</a> <font color="Maroon">x</font></span>)</span>;<br/><a NAME="E3:47_3_2_1"/>
<span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p3">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">a</font></span>)</span></span>)</span> <a href="funct_1.html#K2">"</a> </span>)</span> <a href="funct_1.html#K1">.</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p3">(<span class="default"><a href="polynom2.html#K1">support</a> <span class="p4">(<span class="default"><font color="Maroon">a</font> <a href="polynom1.html#K9">+</a> <font color="Maroon">b</font></span>)</span></span>)</span></span>)</span> <a href="funct_1.html#K1">.</a> <font color="Maroon">x</font></span>)</span> <a href="hidden.html#R2">in</a>  <a href="relat_1.html#K2">rng</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p3">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">a</font></span>)</span></span>)</span> <a href="funct_1.html#K2">"</a> </span>)</span>
 <b>by </b><i><a class="txt" href="nat_3.html#E7:47"><i><font color="Green">E49</font></i></a>, <a class="txt" href="nat_3.html#E14:47"><i><font color="Green">E69</font></i></a>, <a class="ref" href="funct_1.html#T12">FUNCT_1:12</a></i>;<br/><b>then reconsider </b><font color="Maroon">cax</font> = <span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p3">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">a</font></span>)</span></span>)</span> <a href="funct_1.html#K2">"</a> </span>)</span> <a href="funct_1.html#K1">.</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p3">(<span class="default"><a href="polynom2.html#K1">support</a> <span class="p4">(<span class="default"><font color="Maroon">a</font> <a href="polynom1.html#K9">+</a> <font color="Maroon">b</font></span>)</span></span>)</span></span>)</span> <a href="funct_1.html#K1">.</a> <font color="Maroon">x</font></span>)</span> as  <a href="ordinal1.html#V7">natural</a>  <a href="ordinal1.html#NM1" target="_self">number</a>  <b>by </b><i><a class="txt" href="nat_3.html#E8:47"><i><font color="Green">E50</font></i></a>, <a class="txt" href="nat_3.html#E10:47"><i><font color="Green">E51</font></i></a>, </i>;<br/><div><a class="txt" onclick="hs2(this)" href="javascript:()" title="47_3_2_1_1"><b>now </b></a><div class="add"><b>assume </b><a NAME="E1:47_3_2_1_1"/>
 <a href="finseq_1.html#K3">len</a> <font color="Maroon">fa</font> <a href="xxreal_0.html#R1">&lt;</a> <font color="Maroon">cgx</font>
 ;<br/><a NAME="E2:47_3_2_1_1"/><b>then </b><i><font color="Green">E145</font></i>: 
<span class="p1">(<span class="default"><a href="finseq_1.html#K3">len</a> <font color="Maroon">fa</font></span>)</span> <a href="binop_2.html#K23">+</a> 1 <a href="xxreal_0.html#R1">&lt;=</a> <font color="Maroon">cgx</font>
 <b>by </b><i><a class="ref" href="nat_1.html#T38">NAT_1:38</a></i>;<br/><a NAME="E3:47_3_2_1_1"/><b>then </b><i><font color="Green">E146</font></i>: 
<span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p3">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">a</font></span>)</span></span>)</span> <a href="finseq_1.html#K7">^</a> <span class="p2">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p3">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">b</font></span>)</span></span>)</span></span>)</span> <a href="funct_1.html#K1">.</a> <font color="Maroon">cgxN</font> <a href="hidden.html#R1">=</a> <span class="p1">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p2">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">b</font></span>)</span></span>)</span> <a href="funct_1.html#K1">.</a> <span class="p1">(<span class="default"><font color="Maroon">cgx</font> <a href="xcmplx_0.html#K6">-</a> <span class="p2">(<span class="default"><a href="finseq_1.html#K3">len</a> <span class="p3">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p4">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">a</font></span>)</span></span>)</span></span>)</span></span>)</span>
 <b>by </b><i><a class="txt" href="nat_3.html#E13:47"><i><font color="Green">E53</font></i></a>, <a class="ref" href="nat_3.html#T3" target="_self">Th3</a>, , <a class="ref" href="finseq_1.html#T36">FINSEQ_1:36</a></i>;<br/><a NAME="E4:47_3_2_1_1"/><i><font color="Green">E147</font></i>: 
<span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="finseq_1.html#K3">len</a> <span class="p3">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p4">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">a</font></span>)</span></span>)</span></span>)</span> <a href="binop_2.html#K23">+</a> 1</span>)</span> <a href="xcmplx_0.html#K6">-</a> <span class="p1">(<span class="default"><a href="finseq_1.html#K3">len</a> <span class="p2">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p3">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">a</font></span>)</span></span>)</span></span>)</span> <a href="xxreal_0.html#R1">&lt;=</a> <font color="Maroon">cgx</font> <a href="xcmplx_0.html#K6">-</a> <span class="p1">(<span class="default"><a href="finseq_1.html#K3">len</a> <span class="p2">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p3">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">a</font></span>)</span></span>)</span></span>)</span>
 <b>by </b><i><a class="txt" href="nat_3.html#E13:47"><i><font color="Green">E53</font></i></a>, <a class="ref" href="nat_3.html#T11" target="_self">Th11</a>, <a class="ref" href="xreal_1.html#T11">XREAL_1:11</a></i>;<br/><a NAME="E5:47_3_2_1_1"/><b>then </b>
0 <a href="xxreal_0.html#R1">&lt;=</a> <font color="Maroon">cgx</font> <a href="xcmplx_0.html#K6">-</a> <span class="p1">(<span class="default"><a href="finseq_1.html#K3">len</a> <span class="p2">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p3">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">a</font></span>)</span></span>)</span></span>)</span>
 ;<br/><a NAME="E6:47_3_2_1_1"/><b>then </b><i><font color="Green">E148</font></i>: 
<font color="Maroon">cgx</font> <a href="xcmplx_0.html#K6">-</a> <span class="p1">(<span class="default"><a href="finseq_1.html#K3">len</a> <span class="p2">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p3">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">a</font></span>)</span></span>)</span></span>)</span> is    <a href="subset_1.html#M2">Element</a> of  <a href="numbers.html#K5">NAT</a> 
 <b>by </b><i><a class="ref" href="int_1.html#T16">INT_1:16</a></i>;<br/><a NAME="E7:47_3_2_1_1"/>
<font color="Maroon">cgx</font> <a href="xcmplx_0.html#K6">-</a> <span class="p1">(<span class="default"><a href="finseq_1.html#K3">len</a> <span class="p2">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p3">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">a</font></span>)</span></span>)</span></span>)</span> <a href="xxreal_0.html#R1">&lt;=</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="finseq_1.html#K3">len</a> <span class="p3">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p4">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">a</font></span>)</span></span>)</span></span>)</span> <a href="binop_2.html#K23">+</a> <span class="p2">(<span class="default"><a href="finseq_1.html#K3">len</a> <span class="p3">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p4">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">b</font></span>)</span></span>)</span></span>)</span></span>)</span> <a href="xcmplx_0.html#K6">-</a> <span class="p1">(<span class="default"><a href="finseq_1.html#K3">len</a> <span class="p2">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p3">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">a</font></span>)</span></span>)</span></span>)</span>
 <b>by </b><i><a class="txt" href="nat_3.html#E13:47"><i><font color="Green">E53</font></i></a>, <a class="ref" href="nat_3.html#T3" target="_self">Th3</a>, , <a class="ref" href="xreal_1.html#T11">XREAL_1:11</a></i>;<br/><a NAME="E8:47_3_2_1_1"/><b>then </b>
<font color="Maroon">cgx</font> <a href="xcmplx_0.html#K6">-</a> <span class="p1">(<span class="default"><a href="finseq_1.html#K3">len</a> <span class="p2">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p3">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">a</font></span>)</span></span>)</span></span>)</span> <a href="hidden.html#R2">in</a>  <a href="finseq_1.html#K4">dom</a> <span class="p1">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p2">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">b</font></span>)</span></span>)</span>
 <b>by </b><i><a class="ref" href="nat_3.html#T13" target="_self">Th13</a>, <a class="txt" href="nat_3.html#E15:47"><i><font color="Green">E74</font></i></a>, <a class="ref" href="finseq_3.html#T27">FINSEQ_3:27</a></i>;<br/><b>hence </b><a NAME="E9:47_3_2_1_1"/>
contradiction
 <b>by </b><i>, <a class="ref" href="nat_3.html#D1" target="_self">Def1</a>, , <a class="ref" href="nat_3.html#T9" target="_self">Th9</a>, <a class="ref" href="nat_3.html#T12" target="_self">Th12</a>, <a class="ref" href="funct_1.html#T12">FUNCT_1:12</a></i>;<br/></div><b>end;</b></div><a NAME="E6:47_3_2_1"/><b>then </b><i><font color="Green">E149</font></i>: 
<font color="Maroon">cgxN</font> <a href="hidden.html#R2">in</a>  <a href="finseq_1.html#K4">dom</a> <font color="Maroon">fa</font>
 <b>by </b><i>, <a class="ref" href="finseq_3.html#T27">FINSEQ_3:27</a></i>;<br/><a NAME="E7:47_3_2_1"/><b>then </b><i><font color="Green">E150</font></i>: 
<span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p3">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">a</font></span>)</span></span>)</span> <a href="finseq_1.html#K7">^</a> <span class="p2">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p3">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">b</font></span>)</span></span>)</span></span>)</span> <a href="funct_1.html#K1">.</a> <font color="Maroon">cgx</font> <a href="hidden.html#R1">=</a> <span class="p1">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p2">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">a</font></span>)</span></span>)</span> <a href="funct_1.html#K1">.</a> <font color="Maroon">cgx</font>
 <b>by </b><i><a class="txt" href="nat_3.html#E11:47"><i><font color="Green">E52</font></i></a>, <a class="ref" href="finseq_1.html#D7">FINSEQ_1:def 7</a></i>;<br/><i><font color="Green">E151</font></i>: <span class="p1">(<span class="default"><font color="Maroon">fa</font> <a href="finseq_1.html#K8">^</a> <font color="Maroon">fb</font></span>)</span> <a href="funct_1.html#K1">.</a> <font color="Maroon">cgx</font> = 
<font color="Maroon">fa</font> <a href="funct_1.html#K1">.</a> <font color="Maroon">cgxN</font>
<b>by </b><i><a class="ref" href="nat_3.html#T11" target="_self">Th11</a>, <a class="ref" href="finseq_1.html#D7">FINSEQ_1:def 7</a></i>
<br/>.= 
<font color="Maroon">a</font> <a href="polynom1.html#K8">.</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p3">(<span class="default"><a href="polynom2.html#K1">support</a> <span class="p4">(<span class="default"><font color="Maroon">a</font> <a href="polynom1.html#K9">+</a> <font color="Maroon">b</font></span>)</span></span>)</span></span>)</span> <a href="funct_1.html#K1">.</a> <font color="Maroon">x</font></span>)</span>
<b>by </b><i>, <a class="txt" href="nat_3.html#E11:47"><i><font color="Green">E52</font></i></a>, <a class="ref" href="nat_3.html#D1" target="_self">Def1</a>, , <a class="ref" href="nat_3.html#T11" target="_self">Th11</a>, <a class="ref" href="nat_3.html#T12" target="_self">Th12</a>, <a class="ref" href="funct_1.html#T23">FUNCT_1:23</a></i>
;<br/><b>thus </b><font color="Maroon">f</font> <a href="funct_1.html#K1">.</a> <font color="Maroon">x</font> = 
<span class="p1">(<span class="default"><font color="Maroon">a</font> <a href="polynom1.html#K9">+</a> <font color="Maroon">b</font></span>)</span> <a href="polynom1.html#K8">.</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p3">(<span class="default"><a href="polynom2.html#K1">support</a> <span class="p4">(<span class="default"><font color="Maroon">a</font> <a href="polynom1.html#K9">+</a> <font color="Maroon">b</font></span>)</span></span>)</span></span>)</span> <a href="funct_1.html#K1">.</a> <font color="Maroon">x</font></span>)</span>
<b>by </b><i>, , <a class="ref" href="funct_1.html#T22">FUNCT_1:22</a></i>
<br/>.= 
<span class="p1">(<span class="default"><font color="Maroon">a</font> <a href="polynom1.html#K8">.</a> <span class="p2">(<span class="default"><span class="p3">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p4">(<span class="default"><a href="polynom2.html#K1">support</a> <span class="p5">(<span class="default"><font color="Maroon">a</font> <a href="polynom1.html#K9">+</a> <font color="Maroon">b</font></span>)</span></span>)</span></span>)</span> <a href="funct_1.html#K1">.</a> <font color="Maroon">x</font></span>)</span></span>)</span> <a href="binop_2.html#K23">+</a> <span class="p1">(<span class="default"><font color="Maroon">b</font> <a href="polynom1.html#K8">.</a> <span class="p2">(<span class="default"><span class="p3">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p4">(<span class="default"><a href="polynom2.html#K1">support</a> <span class="p5">(<span class="default"><font color="Maroon">a</font> <a href="polynom1.html#K9">+</a> <font color="Maroon">b</font></span>)</span></span>)</span></span>)</span> <a href="funct_1.html#K1">.</a> <font color="Maroon">x</font></span>)</span></span>)</span>
<b>by </b><i><a class="ref" href="polynom1.html#D5">POLYNOM1:def 5</a></i>
<br/>.= 
<span class="p1">(<span class="default"><font color="Maroon">a</font> <a href="polynom1.html#K8">.</a> <span class="p2">(<span class="default"><span class="p3">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p4">(<span class="default"><a href="polynom2.html#K1">support</a> <span class="p5">(<span class="default"><font color="Maroon">a</font> <a href="polynom1.html#K9">+</a> <font color="Maroon">b</font></span>)</span></span>)</span></span>)</span> <a href="funct_1.html#K1">.</a> <font color="Maroon">x</font></span>)</span></span>)</span> <a href="binop_2.html#K23">+</a> 0
<b>by </b><i><a class="ref" href="nat_3.html#T9" target="_self">Th9</a>, <a class="ref" href="polynom1.html#D7">POLYNOM1:def 7</a></i>
<br/>.= 
<span class="p1">(<span class="default"><span class="p2">(<span class="default"><font color="Maroon">fa</font> <a href="finseq_1.html#K8">^</a> <font color="Maroon">fb</font></span>)</span> <a href="funct_1.html#NK3" target="_self">*</a> <font color="Maroon">p</font></span>)</span> <a href="funct_1.html#K1">.</a> <font color="Maroon">x</font>
<b>by </b><i>, <a class="ref" href="nat_3.html#T13" target="_self">Th13</a></i>
;<br/></div><b>end;</b></div><div><a class="txt" onclick="hsNdiv(this)" href="javascript:()" title="47_3_2_2"><b>suppose </b></a><a NAME="E1:47_3_2_2"/><i><font color="Green">E152</font></i>: 
<span class="p1">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p2">(<span class="default"><a href="polynom2.html#K1">support</a> <span class="p3">(<span class="default"><font color="Maroon">a</font> <a href="polynom1.html#K9">+</a> <font color="Maroon">b</font></span>)</span></span>)</span></span>)</span> <a href="funct_1.html#K1">.</a> <font color="Maroon">x</font> <a href="hidden.html#R2">in</a>  <a href="polynom2.html#K1">support</a> <font color="Maroon">b</font>
 ;<br/><div class="add"><a NAME="E2:47_3_2_2"/><b>then </b><i><font color="Green">E153</font></i>: 
not <span class="p1">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p2">(<span class="default"><a href="polynom2.html#K1">support</a> <span class="p3">(<span class="default"><font color="Maroon">a</font> <a href="polynom1.html#K9">+</a> <font color="Maroon">b</font></span>)</span></span>)</span></span>)</span> <a href="funct_1.html#K1">.</a> <font color="Maroon">x</font> <a href="hidden.html#R2">in</a>  <a href="polynom2.html#K1">support</a> <font color="Maroon">a</font>
 <b>by </b><i>, <a class="ref" href="xboole_0.html#D3">XBOOLE_0:def 3</a></i>;<br/><b>set </b><font color="Maroon">cbx</font> = <span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p3">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">b</font></span>)</span></span>)</span> <a href="funct_1.html#K2">"</a> </span>)</span> <a href="funct_1.html#K1">.</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p3">(<span class="default"><a href="polynom2.html#K1">support</a> <span class="p4">(<span class="default"><font color="Maroon">a</font> <a href="polynom1.html#K9">+</a> <font color="Maroon">b</font></span>)</span></span>)</span></span>)</span> <a href="funct_1.html#K1">.</a> <font color="Maroon">x</font></span>)</span>;<br/><a NAME="E3:47_3_2_2"/>
<span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p3">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">b</font></span>)</span></span>)</span> <a href="funct_1.html#K2">"</a> </span>)</span> <a href="funct_1.html#K1">.</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p3">(<span class="default"><a href="polynom2.html#K1">support</a> <span class="p4">(<span class="default"><font color="Maroon">a</font> <a href="polynom1.html#K9">+</a> <font color="Maroon">b</font></span>)</span></span>)</span></span>)</span> <a href="funct_1.html#K1">.</a> <font color="Maroon">x</font></span>)</span> <a href="hidden.html#R2">in</a>  <a href="relat_1.html#K2">rng</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p3">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">b</font></span>)</span></span>)</span> <a href="funct_1.html#K2">"</a> </span>)</span>
 <b>by </b><i>, <a class="txt" href="nat_3.html#E14:47"><i><font color="Green">E69</font></i></a>, <a class="ref" href="funct_1.html#T12">FUNCT_1:12</a></i>;<br/><b>then reconsider </b><font color="Maroon">cbx</font> = <span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p3">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">b</font></span>)</span></span>)</span> <a href="funct_1.html#K2">"</a> </span>)</span> <a href="funct_1.html#K1">.</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p3">(<span class="default"><a href="polynom2.html#K1">support</a> <span class="p4">(<span class="default"><font color="Maroon">a</font> <a href="polynom1.html#K9">+</a> <font color="Maroon">b</font></span>)</span></span>)</span></span>)</span> <a href="funct_1.html#K1">.</a> <font color="Maroon">x</font></span>)</span> as  <a href="ordinal1.html#V7">natural</a>  <a href="ordinal1.html#NM1" target="_self">number</a>  <b>by </b><i><a class="txt" href="nat_3.html#E5:47"><i><font color="Green">E47</font></i></a>, , </i>;<br/><div><i><font color="Green">E155</font></i>: <a class="txt" onclick="hs2(this)" href="javascript:()" title="47_3_2_2_1"><b>now </b></a><div class="add"><b>assume </b><a NAME="E1:47_3_2_2_1"/>
<span class="p1">(<span class="default"><a href="finseq_1.html#K3">len</a> <font color="Maroon">fa</font></span>)</span> <a href="binop_2.html#K23">+</a> 1 <a href="xxreal_0.html#NR4" target="_self">&gt;</a> <font color="Maroon">cgx</font>
 ;<br/><a NAME="E2:47_3_2_2_1"/><b>then </b>
<font color="Maroon">cgx</font> <a href="xxreal_0.html#R1">&lt;=</a>  <a href="finseq_1.html#K3">len</a> <font color="Maroon">fa</font>
 <b>by </b><i><a class="ref" href="nat_1.html#T38">NAT_1:38</a></i>;<br/><a NAME="E3:47_3_2_2_1"/><b>then </b><i><font color="Green">E156</font></i>: 
<font color="Maroon">cgx</font> <a href="hidden.html#R2">in</a>  <a href="finseq_1.html#K4">dom</a> <span class="p1">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p2">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">a</font></span>)</span></span>)</span>
 <b>by </b><i><a class="txt" href="nat_3.html#E11:47"><i><font color="Green">E52</font></i></a>, , <a class="ref" href="finseq_3.html#T27">FINSEQ_3:27</a></i>;<br/><a NAME="E4:47_3_2_2_1"/><b>then </b>
<span class="p1">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p2">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">a</font></span>)</span></span>)</span> <a href="funct_1.html#K1">.</a> <font color="Maroon">cgx</font> <a href="hidden.html#R2">in</a>  <a href="polynom2.html#K1">support</a> <font color="Maroon">a</font>
 <b>by </b><i>, <a class="ref" href="funct_1.html#T12">FUNCT_1:12</a></i>;<br/><a NAME="E5:47_3_2_2_1"/><b>then </b>
<span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p3">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">a</font></span>)</span></span>)</span> <a href="finseq_1.html#K7">^</a> <span class="p2">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p3">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">b</font></span>)</span></span>)</span></span>)</span> <a href="funct_1.html#K1">.</a> <font color="Maroon">cgxN</font> <a href="hidden.html#R2">in</a>  <a href="polynom2.html#K1">support</a> <font color="Maroon">a</font>
 <b>by </b><i><a class="ref" href="nat_3.html#T12" target="_self">Th12</a>, <a class="ref" href="finseq_1.html#D7">FINSEQ_1:def 7</a></i>;<br/><b>hence </b><a NAME="E6:47_3_2_2_1"/>
contradiction
 <b>by </b><i>, <a class="ref" href="nat_3.html#D1" target="_self">Def1</a>, , <a class="txt" href="nat_3.html#E14:47"><i><font color="Green">E69</font></i></a>, <a class="ref" href="xboole_0.html#D3">XBOOLE_0:def 3</a></i>;<br/></div><b>end;</b></div><a NAME="E6:47_3_2_2"/><b>then </b><i><font color="Green">E157</font></i>: 
<span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p3">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">a</font></span>)</span></span>)</span> <a href="finseq_1.html#K7">^</a> <span class="p2">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p3">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">b</font></span>)</span></span>)</span></span>)</span> <a href="funct_1.html#K1">.</a> <font color="Maroon">cgx</font> <a href="hidden.html#R1">=</a> <span class="p1">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p2">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">b</font></span>)</span></span>)</span> <a href="funct_1.html#K1">.</a> <span class="p1">(<span class="default"><font color="Maroon">cgx</font> <a href="xcmplx_0.html#K6">-</a> <span class="p2">(<span class="default"><a href="finseq_1.html#K3">len</a> <span class="p3">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p4">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">a</font></span>)</span></span>)</span></span>)</span></span>)</span>
 <b>by </b><i><a class="txt" href="nat_3.html#E13:47"><i><font color="Green">E53</font></i></a>, <a class="ref" href="nat_3.html#T3" target="_self">Th3</a>, , <a class="ref" href="finseq_1.html#T36">FINSEQ_1:36</a></i>;<br/><a NAME="E7:47_3_2_2"/><i><font color="Green">E158</font></i>: 
<font color="Maroon">cgx</font> <a href="xcmplx_0.html#K6">-</a> <span class="p1">(<span class="default"><a href="finseq_1.html#K3">len</a> <span class="p2">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p3">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">a</font></span>)</span></span>)</span></span>)</span> <a href="xxreal_0.html#R1">&lt;=</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="finseq_1.html#K3">len</a> <span class="p3">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p4">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">a</font></span>)</span></span>)</span></span>)</span> <a href="binop_2.html#K23">+</a> <span class="p2">(<span class="default"><a href="finseq_1.html#K3">len</a> <span class="p3">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p4">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">b</font></span>)</span></span>)</span></span>)</span></span>)</span> <a href="xcmplx_0.html#K6">-</a> <span class="p1">(<span class="default"><a href="finseq_1.html#K3">len</a> <span class="p2">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p3">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">a</font></span>)</span></span>)</span></span>)</span>
 <b>by </b><i><a class="txt" href="nat_3.html#E13:47"><i><font color="Green">E53</font></i></a>, <a class="ref" href="nat_3.html#T3" target="_self">Th3</a>, , <a class="ref" href="xreal_1.html#T11">XREAL_1:11</a></i>;<br/><a NAME="E8:47_3_2_2"/><i><font color="Green">E159</font></i>: 
<span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="finseq_1.html#K3">len</a> <span class="p3">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p4">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">a</font></span>)</span></span>)</span></span>)</span> <a href="binop_2.html#K23">+</a> 1</span>)</span> <a href="xcmplx_0.html#K6">-</a> <span class="p1">(<span class="default"><a href="finseq_1.html#K3">len</a> <span class="p2">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p3">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">a</font></span>)</span></span>)</span></span>)</span> <a href="xxreal_0.html#R1">&lt;=</a> <font color="Maroon">cgx</font> <a href="xcmplx_0.html#K6">-</a> <span class="p1">(<span class="default"><a href="finseq_1.html#K3">len</a> <span class="p2">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p3">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">a</font></span>)</span></span>)</span></span>)</span>
 <b>by </b><i><a class="txt" href="nat_3.html#E13:47"><i><font color="Green">E53</font></i></a>, <a class="ref" href="nat_3.html#T11" target="_self">Th11</a>, <a class="ref" href="xreal_1.html#T11">XREAL_1:11</a></i>;<br/><a NAME="E9:47_3_2_2"/><b>then </b>
0 <a href="xxreal_0.html#R1">&lt;=</a> <font color="Maroon">cgxN</font> <a href="xcmplx_0.html#K6">-</a> <span class="p1">(<span class="default"><a href="finseq_1.html#K3">len</a> <span class="p2">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p3">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">a</font></span>)</span></span>)</span></span>)</span>
 ;<br/><a NAME="E10:47_3_2_2"/><b>then </b>
<font color="Maroon">cgxN</font> <a href="xcmplx_0.html#K6">-</a> <span class="p1">(<span class="default"><a href="finseq_1.html#K3">len</a> <span class="p2">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p3">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">a</font></span>)</span></span>)</span></span>)</span> <a href="hidden.html#R2">in</a>  <a href="numbers.html#K5">NAT</a> 
 <b>by </b><i><a class="ref" href="int_1.html#T16">INT_1:16</a></i>;<br/><a NAME="E11:47_3_2_2"/><b>then </b>
<font color="Maroon">cgxN</font> <a href="xcmplx_0.html#K6">-</a> <span class="p1">(<span class="default"><a href="finseq_1.html#K3">len</a> <span class="p2">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p3">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">a</font></span>)</span></span>)</span></span>)</span> is   <a href="nat_1.html#NM1">Nat</a>
 <b>by </b><i><a class="ref" href="ordinal1.html#D13">ORDINAL1:def 13</a></i>;<br/><a NAME="E12:47_3_2_2"/><b>then </b><i><font color="Green">E160</font></i>: 
<font color="Maroon">cgxN</font> <a href="xcmplx_0.html#K6">-</a> <span class="p1">(<span class="default"><a href="finseq_1.html#K3">len</a> <span class="p2">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p3">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">a</font></span>)</span></span>)</span></span>)</span> <a href="hidden.html#R2">in</a>  <a href="finseq_1.html#K4">dom</a> <span class="p1">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p2">(<span class="default"><a href="polynom2.html#K1">support</a> <font color="Maroon">b</font></span>)</span></span>)</span>
 <b>by </b><i><a class="ref" href="nat_3.html#T13" target="_self">Th13</a>, <a class="txt" href="nat_3.html#E15:47"><i><font color="Green">E74</font></i></a>, <a class="ref" href="finseq_3.html#T27">FINSEQ_3:27</a></i>;<br/><i><font color="Green">E161</font></i>: <span class="p1">(<span class="default"><font color="Maroon">fa</font> <a href="finseq_1.html#K8">^</a> <font color="Maroon">fb</font></span>)</span> <a href="funct_1.html#K1">.</a> <font color="Maroon">cgx</font> = 
<font color="Maroon">fb</font> <a href="funct_1.html#K1">.</a> <span class="p1">(<span class="default"><font color="Maroon">cgxN</font> <a href="xcmplx_0.html#K6">-</a> <span class="p2">(<span class="default"><a href="finseq_1.html#K3">len</a> <font color="Maroon">fa</font></span>)</span></span>)</span>
<b>by </b><i>, <a class="ref" href="nat_3.html#T11" target="_self">Th11</a>, <a class="ref" href="finseq_1.html#T36">FINSEQ_1:36</a></i>
<br/>.= 
<font color="Maroon">b</font> <a href="polynom1.html#K8">.</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p3">(<span class="default"><a href="polynom2.html#K1">support</a> <span class="p4">(<span class="default"><font color="Maroon">a</font> <a href="polynom1.html#K9">+</a> <font color="Maroon">b</font></span>)</span></span>)</span></span>)</span> <a href="funct_1.html#K1">.</a> <font color="Maroon">x</font></span>)</span>
<b>by </b><i>, <a class="txt" href="nat_3.html#E13:47"><i><font color="Green">E53</font></i></a>, <a class="ref" href="nat_3.html#D1" target="_self">Def1</a>, , <a class="ref" href="nat_3.html#T12" target="_self">Th12</a>, <a class="ref" href="nat_3.html#T14" target="_self">Th14</a>, <a class="ref" href="funct_1.html#T23">FUNCT_1:23</a></i>
;<br/><b>thus </b><font color="Maroon">f</font> <a href="funct_1.html#K1">.</a> <font color="Maroon">x</font> = 
<span class="p1">(<span class="default"><font color="Maroon">a</font> <a href="polynom1.html#K9">+</a> <font color="Maroon">b</font></span>)</span> <a href="polynom1.html#K8">.</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p3">(<span class="default"><a href="polynom2.html#K1">support</a> <span class="p4">(<span class="default"><font color="Maroon">a</font> <a href="polynom1.html#K9">+</a> <font color="Maroon">b</font></span>)</span></span>)</span></span>)</span> <a href="funct_1.html#K1">.</a> <font color="Maroon">x</font></span>)</span>
<b>by </b><i>, , <a class="ref" href="funct_1.html#T22">FUNCT_1:22</a></i>
<br/>.= 
<span class="p1">(<span class="default"><font color="Maroon">a</font> <a href="polynom1.html#K8">.</a> <span class="p2">(<span class="default"><span class="p3">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p4">(<span class="default"><a href="polynom2.html#K1">support</a> <span class="p5">(<span class="default"><font color="Maroon">a</font> <a href="polynom1.html#K9">+</a> <font color="Maroon">b</font></span>)</span></span>)</span></span>)</span> <a href="funct_1.html#K1">.</a> <font color="Maroon">x</font></span>)</span></span>)</span> <a href="binop_2.html#K23">+</a> <span class="p1">(<span class="default"><font color="Maroon">b</font> <a href="polynom1.html#K8">.</a> <span class="p2">(<span class="default"><span class="p3">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p4">(<span class="default"><a href="polynom2.html#K1">support</a> <span class="p5">(<span class="default"><font color="Maroon">a</font> <a href="polynom1.html#K9">+</a> <font color="Maroon">b</font></span>)</span></span>)</span></span>)</span> <a href="funct_1.html#K1">.</a> <font color="Maroon">x</font></span>)</span></span>)</span>
<b>by </b><i><a class="ref" href="polynom1.html#D5">POLYNOM1:def 5</a></i>
<br/>.= 
0 <a href="binop_2.html#K23">+</a> <span class="p1">(<span class="default"><font color="Maroon">b</font> <a href="polynom1.html#K8">.</a> <span class="p2">(<span class="default"><span class="p3">(<span class="default"><a href="uproots.html#K1">canFS</a> <span class="p4">(<span class="default"><a href="polynom2.html#K1">support</a> <span class="p5">(<span class="default"><font color="Maroon">a</font> <a href="polynom1.html#K9">+</a> <font color="Maroon">b</font></span>)</span></span>)</span></span>)</span> <a href="funct_1.html#K1">.</a> <font color="Maroon">x</font></span>)</span></span>)</span>
<b>by </b><i><a class="ref" href="nat_3.html#T9" target="_self">Th9</a>, <a class="ref" href="polynom1.html#D7">POLYNOM1:def 7</a></i>
<br/>.= 
<span class="p1">(<span class="default"><span class="p2">(<span class="default"><font color="Maroon">fa</font> <a href="finseq_1.html#K8">^</a> <font color="Maroon">fb</font></span>)</span> <a href="funct_1.html#NK3" target="_self">*</a> <font color="Maroon">p</font></span>)</span> <a href="funct_1.html#K1">.</a> <font color="Maroon">x</font>
<b>by </b><i>, <a class="ref" href="nat_3.html#D2" target="_self">Def2</a></i>
;<br/></div><b>end;</b></div></div><b>end;</b></div></div><b>end;</b></div>
<a NAME="E55:47"/><b>then </b><i><font color="Green">E162</font></i>: 
<font color="Maroon">f</font> <a href="hidden.html#R1">=</a> <span class="p1">(<span class="default"><font color="Maroon">fa</font> <a href="finseq_1.html#K8">^</a> <font color="Maroon">fb</font></span>)</span> <a href="funct_1.html#NK3" target="_self">*</a> <font color="Maroon">p</font>
 
<b>by </b><i>, <a class="ref" href="nat_3.html#T6" target="_self">Th6</a>, <a class="ref" href="funct_1.html#T9">FUNCT_1:9</a></i>;<br/>
<b>thus </b> <a href="nat_3.html#K8" target="_self">Product</a> <span class="p1">(<span class="default"><font color="Maroon">a</font> <a href="polynom1.html#K9">+</a> <font color="Maroon">b</font></span>)</span> = 
<a href="binop_2.html#K29">multcomplex</a>  <a href="finsop_1.html#K2">$$</a> <font color="Maroon">f</font>
<b>by </b><i>, <a class="ref" href="rvsum_1.html#D12">RVSUM_1:def 12</a></i>
<br/>.= 
<a href="binop_2.html#K29">multcomplex</a>  <a href="finsop_1.html#K2">$$</a> <span class="p1">(<span class="default"><font color="Maroon">fa</font> <a href="finseq_1.html#K8">^</a> <font color="Maroon">fb</font></span>)</span>
<b>by </b><i>, <a class="ref" href="finsop_1.html#T8">FINSOP_1:8</a></i>
<br/>.= 
 <a href="rvsum_1.html#K17">Product</a> <span class="p1">(<span class="default"><font color="Maroon">fa</font> <a href="finseq_1.html#K8">^</a> <font color="Maroon">fb</font></span>)</span>
<b>by </b><i><a class="ref" href="rvsum_1.html#D12">RVSUM_1:def 12</a></i>
<br/>.= 
<span class="p1">(<span class="default"><a href="nat_3.html#K8" target="_self">Product</a> <font color="Maroon">a</font></span>)</span> <a href="binop_2.html#K24">*</a> <span class="p1">(<span class="default"><a href="nat_3.html#K8" target="_self">Product</a> <font color="Maroon">b</font></span>)</span>
<b>by </b><i>, , <a class="ref" href="rvsum_1.html#T127">RVSUM_1:127</a></i>
;<br/>


</div>
