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<b>let </b><font color="Maroon">A</font> be    <a href="hidden.html#M1">set</a> ;<br/><b>let </b><font color="Maroon">b</font> be   <a href="uproots.html#NM1">Rbag</a> of <font color="Maroon">A</font>, <font color="Maroon">b1</font> be   <a href="uproots.html#NM1">Rbag</a> of <font color="Maroon">A</font>, <font color="Maroon">b2</font> be   <a href="uproots.html#NM1">Rbag</a> of <font color="Maroon">A</font>;<br/>



<b>assume </b><a NAME="E1:24"/><i><font color="Green">E42</font></i>: 
<font color="Maroon">b</font> <a href="pboole.html#R6">=</a> <font color="Maroon">b1</font> <a href="polynom1.html#K9">+</a> <font color="Maroon">b2</font>
 ;<br/>

<b>set </b><font color="Maroon">S</font> =  <a href="polynom1.html#K11">support</a> <font color="Maroon">b</font>;<br/>
<b>set </b><font color="Maroon">SS</font> = <span class="p1">(<span class="default"><a href="polynom1.html#K11">support</a> <font color="Maroon">b1</font></span>)</span> <a href="xboole_0.html#K2">\/</a> <span class="p1">(<span class="default"><a href="polynom1.html#K11">support</a> <font color="Maroon">b2</font></span>)</span>;<br/>
<a NAME="E2:24"/><i><font color="Green">E43</font></i>: 
(  <a href="relat_1.html#K1">dom</a> <font color="Maroon">b</font> <a href="hidden.html#R1">=</a> <font color="Maroon">A</font> &amp;  <a href="relat_1.html#K1">dom</a> <font color="Maroon">b1</font> <a href="hidden.html#R1">=</a> <font color="Maroon">A</font> &amp;  <a href="relat_1.html#K1">dom</a> <font color="Maroon">b2</font> <a href="hidden.html#R1">=</a> <font color="Maroon">A</font> )
 
<b>by </b><i><a class="ref" href="pboole.html#D3">PBOOLE:def 3</a></i>;<br/>
<a NAME="E3:24"/><b>then </b>
(  <a href="polynom1.html#K11">support</a> <font color="Maroon">b1</font> <a href="tarski.html#R1">c=</a> <font color="Maroon">A</font> &amp;  <a href="polynom1.html#K11">support</a> <font color="Maroon">b2</font> <a href="tarski.html#R1">c=</a> <font color="Maroon">A</font> )
 
<b>by </b><i><a class="ref" href="polynom1.html#T41">POLYNOM1:41</a></i>;<br/>
<a NAME="E4:24"/><b>then </b>
<span class="p1">(<span class="default"><a href="polynom1.html#K11">support</a> <font color="Maroon">b1</font></span>)</span> <a href="xboole_0.html#K2">\/</a> <span class="p1">(<span class="default"><a href="polynom1.html#K11">support</a> <font color="Maroon">b2</font></span>)</span> <a href="tarski.html#R1">c=</a> <font color="Maroon">A</font>
 
<b>by </b><i><a class="ref" href="xboole_1.html#T8">XBOOLE_1:8</a></i>;<br/>
<b>then reconsider </b><font color="Maroon">SS</font> = <span class="p1">(<span class="default"><a href="polynom1.html#K11">support</a> <font color="Maroon">b1</font></span>)</span> <a href="xboole_0.html#K2">\/</a> <span class="p1">(<span class="default"><a href="polynom1.html#K11">support</a> <font color="Maroon">b2</font></span>)</span> as  <a href="finset_1.html#V1">finite</a> <a href="subset_1.html#NM2">Subset</a> of <font color="Maroon">A</font> ;<br/>
<a NAME="E6:24"/>
 <a href="polynom1.html#K11">support</a> <font color="Maroon">b</font> <a href="tarski.html#R1">c=</a> <font color="Maroon">SS</font>
 
<b>by </b><i>, <a class="ref" href="polynom1.html#T91">POLYNOM1:91</a></i>;<br/>
<b>then consider </b><font color="Maroon">f</font> being    <a href="finseq_1.html#M2">FinSequence</a> of  <a href="numbers.html#K1">REAL</a> <b> such that </b><br/><a NAME="E8:24"/><i><font color="Green">E44</font></i>: 
<font color="Maroon">f</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" target="_self">canFS</a> <font color="Maroon">SS</font></span>)</span>
 <b>and </b><br/><a NAME="E9:24"/><i><font color="Green">E45</font></i>: 
 <a href="uproots.html#K3" target="_self">Sum</a> <font color="Maroon">b</font> <a href="hidden.html#R1">=</a>  <a href="rvsum_1.html#K15">Sum</a> <font color="Maroon">f</font>
 <b>by </b><i/>;<br/>
<a NAME="E10:24"/>
 <a href="polynom1.html#K11">support</a> <font color="Maroon">b1</font> <a href="tarski.html#R1">c=</a> <font color="Maroon">SS</font>
 
<b>by </b><i><a class="ref" href="xboole_1.html#T7">XBOOLE_1:7</a></i>;<br/>
<b>then consider </b><font color="Maroon">f1r</font> being    <a href="finseq_1.html#M2">FinSequence</a> of  <a href="numbers.html#K1">REAL</a> <b> such that </b><br/><a NAME="E12:24"/><i><font color="Green">E46</font></i>: 
<font color="Maroon">f1r</font> <a href="hidden.html#R1">=</a> <font color="Maroon">b1</font> <a href="funct_1.html#NK3" target="_self">*</a> <span class="p1">(<span class="default"><a href="uproots.html#K1" target="_self">canFS</a> <font color="Maroon">SS</font></span>)</span>
 <b>and </b><br/><a NAME="E13:24"/><i><font color="Green">E47</font></i>: 
 <a href="uproots.html#K3" target="_self">Sum</a> <font color="Maroon">b1</font> <a href="hidden.html#R1">=</a>  <a href="rvsum_1.html#K15">Sum</a> <font color="Maroon">f1r</font>
 <b>by </b><i/>;<br/>
<a NAME="E14:24"/>
 <a href="polynom1.html#K11">support</a> <font color="Maroon">b2</font> <a href="tarski.html#R1">c=</a> <font color="Maroon">SS</font>
 
<b>by </b><i><a class="ref" href="xboole_1.html#T7">XBOOLE_1:7</a></i>;<br/>
<b>then consider </b><font color="Maroon">f2r</font> being    <a href="finseq_1.html#M2">FinSequence</a> of  <a href="numbers.html#K1">REAL</a> <b> such that </b><br/><a NAME="E16:24"/><i><font color="Green">E50</font></i>: 
<font color="Maroon">f2r</font> <a href="hidden.html#R1">=</a> <font color="Maroon">b2</font> <a href="funct_1.html#NK3" target="_self">*</a> <span class="p1">(<span class="default"><a href="uproots.html#K1" target="_self">canFS</a> <font color="Maroon">SS</font></span>)</span>
 <b>and </b><br/><a NAME="E17:24"/><i><font color="Green">E51</font></i>: 
 <a href="uproots.html#K3" target="_self">Sum</a> <font color="Maroon">b2</font> <a href="hidden.html#R1">=</a>  <a href="rvsum_1.html#K15">Sum</a> <font color="Maroon">f2r</font>
 <b>by </b><i/>;<br/>
<b>set </b><font color="Maroon">cS</font> =  <a href="uproots.html#K1" target="_self">canFS</a> <font color="Maroon">SS</font>;<br/>
<a NAME="E18:24"/>
 <a href="relset_1.html#K5">rng</a> <span class="p1">(<span class="default"><a href="uproots.html#K1" target="_self">canFS</a> <font color="Maroon">SS</font></span>)</span> <a href="hidden.html#R1">=</a> <font color="Maroon">SS</font>
 
<b>by </b><i/>;<br/>
<a NAME="E19:24"/><b>then </b><i><font color="Green">E52</font></i>: 
(  <a href="finsop_1.html#K5">dom</a> <font color="Maroon">f</font> <a href="hidden.html#R1">=</a>  <a href="finsop_1.html#K5">dom</a> <span class="p1">(<span class="default"><a href="uproots.html#K1" target="_self">canFS</a> <font color="Maroon">SS</font></span>)</span> &amp;  <a href="finsop_1.html#K5">dom</a> <font color="Maroon">f1r</font> <a href="hidden.html#R1">=</a>  <a href="finsop_1.html#K5">dom</a> <span class="p1">(<span class="default"><a href="uproots.html#K1" target="_self">canFS</a> <font color="Maroon">SS</font></span>)</span> &amp;  <a href="finsop_1.html#K5">dom</a> <font color="Maroon">f2r</font> <a href="hidden.html#R1">=</a>  <a href="finsop_1.html#K5">dom</a> <span class="p1">(<span class="default"><a href="uproots.html#K1" target="_self">canFS</a> <font color="Maroon">SS</font></span>)</span> )
 
<b>by </b><i>, , , , <a class="ref" href="relat_1.html#T46">RELAT_1:46</a></i>;<br/>
<a NAME="E20:24"/><b>then </b><i><font color="Green">E53</font></i>: 
(  <a href="finseq_1.html#K3">len</a> <font color="Maroon">f1r</font> <a href="hidden.html#R1">=</a>  <a href="finseq_1.html#K3">len</a> <font color="Maroon">f2r</font> &amp;  <a href="finseq_1.html#K3">len</a> <font color="Maroon">f1r</font> <a href="hidden.html#R1">=</a>  <a href="finseq_1.html#K3">len</a> <font color="Maroon">f</font> )
 
<b>by </b><i><a class="ref" href="finseq_3.html#T31">FINSEQ_3:31</a></i>;<br/>
<div><a class="txt" onclick="hs2(this)" href="javascript:()" title="24_1"><b>now </b></a><div class="add"><b>let </b><font color="Maroon">k</font> be    <a href="subset_1.html#M2">Element</a> of  <a href="numbers.html#K5">NAT</a> ;<br/><b>assume </b><a NAME="E1:24_1"/><i><font color="Green">E54</font></i>: 
<font color="Maroon">k</font> <a href="hidden.html#R2">in</a>  <a href="finsop_1.html#K5">dom</a> <font color="Maroon">f1r</font>
 ;<br/><i><font color="Green">E55</font></i>: <font color="Maroon">f1r</font> <a href="finseq_4.html#K4">/.</a> <font color="Maroon">k</font> = 
<font color="Maroon">f1r</font> <a href="wsierp_1.html#K1">.</a> <font color="Maroon">k</font>
<b>by </b><i>, <a class="ref" href="finseq_4.html#D4">FINSEQ_4:def 4</a></i>
<br/>.= 
<font color="Maroon">b1</font> <a href="seq_1.html#K1">.</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="uproots.html#K1" target="_self">canFS</a> <font color="Maroon">SS</font></span>)</span> <a href="funct_1.html#K1">.</a> <font color="Maroon">k</font></span>)</span>
<b>by </b><i>, , <a class="ref" href="funct_1.html#T22">FUNCT_1:22</a></i>
;<br/><i><font color="Green">E56</font></i>: <font color="Maroon">f2r</font> <a href="finseq_4.html#K4">/.</a> <font color="Maroon">k</font> = 
<font color="Maroon">f2r</font> <a href="wsierp_1.html#K1">.</a> <font color="Maroon">k</font>
<b>by </b><i>, , <a class="ref" href="finseq_4.html#D4">FINSEQ_4:def 4</a></i>
<br/>.= 
<font color="Maroon">b2</font> <a href="seq_1.html#K1">.</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="uproots.html#K1" target="_self">canFS</a> <font color="Maroon">SS</font></span>)</span> <a href="funct_1.html#K1">.</a> <font color="Maroon">k</font></span>)</span>
<b>by </b><i>, , , <a class="ref" href="funct_1.html#T22">FUNCT_1:22</a></i>
;<br/><a NAME="E4:24_1"/>
<font color="Maroon">f</font> <a href="wsierp_1.html#K1">.</a> <font color="Maroon">k</font> <a href="hidden.html#R1">=</a> <font color="Maroon">b</font> <a href="seq_1.html#K1">.</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="uproots.html#K1" target="_self">canFS</a> <font color="Maroon">SS</font></span>)</span> <a href="funct_1.html#K1">.</a> <font color="Maroon">k</font></span>)</span>
 <b>by </b><i>, , , <a class="ref" href="funct_1.html#T22">FUNCT_1:22</a></i>;<br/><b>hence </b><a NAME="E5:24_1"/>
<font color="Maroon">f</font> <a href="wsierp_1.html#K1">.</a> <font color="Maroon">k</font> <a href="hidden.html#R1">=</a> <span class="p1">(<span class="default"><font color="Maroon">f1r</font> <a href="finseq_4.html#K4">/.</a> <font color="Maroon">k</font></span>)</span> <a href="binop_2.html#K9">+</a> <span class="p1">(<span class="default"><font color="Maroon">f2r</font> <a href="finseq_4.html#K4">/.</a> <font color="Maroon">k</font></span>)</span>
 <b>by </b><i>, , , <a class="ref" href="polynom1.html#D5">POLYNOM1:def 5</a></i>;<br/></div><b>end;</b></div>
<b>hence </b><a NAME="E22:24"/>
 <a href="uproots.html#K3" target="_self">Sum</a> <font color="Maroon">b</font> <a href="hidden.html#R1">=</a> <span class="p1">(<span class="default"><a href="uproots.html#K3" target="_self">Sum</a> <font color="Maroon">b1</font></span>)</span> <a href="xcmplx_0.html#K2">+</a> <span class="p1">(<span class="default"><a href="uproots.html#K3" target="_self">Sum</a> <font color="Maroon">b2</font></span>)</span>
 <b>by </b><i>, , , , <a class="ref" href="integra1.html#T23">INTEGRA1:23</a></i>;<br/>


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