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<b>let </b><font color="Maroon">L</font> be   <a href="vectsp_2.html#NM1">comRing</a>;<br/><b>let </b><font color="Maroon">i</font> be    <a href="subset_1.html#M2">Element</a> of  <a href="numbers.html#K5">NAT</a> , <font color="Maroon">j</font> be    <a href="subset_1.html#M2">Element</a> of  <a href="numbers.html#K5">NAT</a> ;<br/><b>let </b><font color="Maroon">p</font> be   <a href="polynom3.html#NM1">Polynomial</a> of <font color="Maroon">L</font>;<br/>





<b>defpred </b><font color="Maroon">S<sub>1</sub></font>[   <a href="subset_1.html#M2">Element</a> of  <a href="numbers.html#K5">NAT</a> ] <b>means </b><span class="p1">(<span class="default"><font color="Maroon">p</font> <a href="polynom5.html#K2">`^</a> <font color="Maroon">i</font></span>)</span> <a href="polynom3.html#K15">*'</a> <span class="p1">(<span class="default"><font color="Maroon">p</font> <a href="polynom5.html#K2">`^</a> <font color="Maroon">a<sub>1</sub></font></span>)</span> <a href="funct_2.html#R2">=</a> <font color="Maroon">p</font> <a href="polynom5.html#K2">`^</a> <span class="p1">(<span class="default"><font color="Maroon">i</font> <a href="binop_2.html#K23">+</a> <font color="Maroon">a<sub>1</sub></font></span>)</span>;<br/>
<span class="p1">(<span class="default"><font color="Maroon">p</font> <a href="polynom5.html#K2">`^</a> <font color="Maroon">i</font></span>)</span> <a href="polynom3.html#K15">*'</a> <span class="p1">(<span class="default"><font color="Maroon">p</font> <a href="polynom5.html#K2">`^</a> 0</span>)</span> = 
<span class="p1">(<span class="default"><font color="Maroon">p</font> <a href="polynom5.html#K2">`^</a> <font color="Maroon">i</font></span>)</span> <a href="polynom3.html#K15">*'</a> <span class="p1">(<span class="default"><a href="polynom3.html#K13">1_.</a> <font color="Maroon">L</font></span>)</span>
<b>by </b><i><a class="ref" href="polynom5.html#T16">POLYNOM5:16</a></i>
<br/>.= 
<font color="Maroon">p</font> <a href="polynom5.html#K2">`^</a> <span class="p1">(<span class="default"><font color="Maroon">i</font> <a href="binop_2.html#K23">+</a> 0</span>)</span>
<b>by </b><i><a class="ref" href="polynom3.html#T36">POLYNOM3:36</a></i>
;<br/>
<a NAME="E2:45"/><b>then </b><i><font color="Green">E42</font></i>: 
<font color="Maroon">S<sub>1</sub></font>[0]
 
;<br/>
<a NAME="E3:45"/><i><font color="Green">E43</font></i>: 
for <font color="Olive">j</font> being   <a href="subset_1.html#M2">Element</a> of  <a href="numbers.html#K5">NAT</a>   st <font color="Maroon">S<sub>1</sub></font>[<font color="Olive">j</font>] holds <br/><font color="Maroon">S<sub>1</sub></font>[<font color="Olive">j</font> <a href="binop_2.html#K23">+</a> 1]
 
<div><a class="txt" onclick="hs2(this)" href="javascript:()" title="45_2"><b>proof </b></a><div class="add">

<b>let </b><font color="Maroon">j</font> be    <a href="subset_1.html#M2">Element</a> of  <a href="numbers.html#K5">NAT</a> ;<br/>

<b>assume </b><a NAME="E1:45_2"/><i><font color="Green">E44</font></i>: 
<font color="Maroon">S<sub>1</sub></font>[<font color="Maroon">j</font>]
 ;<br/>

<span class="p1">(<span class="default"><font color="Maroon">p</font> <a href="polynom5.html#K2">`^</a> <font color="Maroon">i</font></span>)</span> <a href="polynom3.html#K15">*'</a> <span class="p1">(<span class="default"><font color="Maroon">p</font> <a href="polynom5.html#K2">`^</a> <span class="p2">(<span class="default"><font color="Maroon">j</font> <a href="binop_2.html#K23">+</a> 1</span>)</span></span>)</span> = 
<span class="p1">(<span class="default"><font color="Maroon">p</font> <a href="polynom5.html#K2">`^</a> <font color="Maroon">i</font></span>)</span> <a href="polynom3.html#K15">*'</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><font color="Maroon">p</font> <a href="polynom5.html#K2">`^</a> <font color="Maroon">j</font></span>)</span> <a href="polynom3.html#K15">*'</a> <font color="Maroon">p</font></span>)</span>
<b>by </b><i><a class="ref" href="polynom5.html#T20">POLYNOM5:20</a></i>
<br/>.= 
<span class="p1">(<span class="default"><font color="Maroon">p</font> <a href="polynom5.html#K2">`^</a> <span class="p2">(<span class="default"><font color="Maroon">i</font> <a href="binop_2.html#K23">+</a> <font color="Maroon">j</font></span>)</span></span>)</span> <a href="polynom3.html#K15">*'</a> <font color="Maroon">p</font>
<b>by </b><i>, <a class="ref" href="polynom3.html#T34">POLYNOM3:34</a></i>
<br/>.= 
<font color="Maroon">p</font> <a href="polynom5.html#K2">`^</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><font color="Maroon">i</font> <a href="binop_2.html#K23">+</a> <font color="Maroon">j</font></span>)</span> <a href="binop_2.html#K23">+</a> 1</span>)</span>
<b>by </b><i><a class="ref" href="polynom5.html#T20">POLYNOM5:20</a></i>
<br/>.= 
<font color="Maroon">p</font> <a href="polynom5.html#K2">`^</a> <span class="p1">(<span class="default"><font color="Maroon">i</font> <a href="binop_2.html#K23">+</a> <span class="p2">(<span class="default"><font color="Maroon">j</font> <a href="binop_2.html#K23">+</a> 1</span>)</span></span>)</span>

;<br/>
<b>hence </b><a NAME="E3:45_2"/>
<font color="Maroon">S<sub>1</sub></font>[<font color="Maroon">j</font> <a href="binop_2.html#K23">+</a> 1]
 ;<br/>


</div><b>end;</b></div>
<a NAME="E4:45"/>
for <font color="Olive">j</font> being   <a href="subset_1.html#M2">Element</a> of  <a href="numbers.html#K5">NAT</a>  holds  <font color="Maroon">S<sub>1</sub></font>[<font color="Olive">j</font>]
 
<b>from </b><i><a class="ref" href="nat_1.html#S1">NAT_1:sch 1</a>(, <a class="ref" href="uproots.html#T1" target="_self">Th1</a>);<br/></i>
<b>hence </b><a NAME="E5:45"/>
<span class="p1">(<span class="default"><font color="Maroon">p</font> <a href="polynom5.html#K2">`^</a> <font color="Maroon">i</font></span>)</span> <a href="polynom3.html#K15">*'</a> <span class="p1">(<span class="default"><font color="Maroon">p</font> <a href="polynom5.html#K2">`^</a> <font color="Maroon">j</font></span>)</span> <a href="funct_2.html#R2">=</a> <font color="Maroon">p</font> <a href="polynom5.html#K2">`^</a> <span class="p1">(<span class="default"><font color="Maroon">i</font> <a href="binop_2.html#K23">+</a> <font color="Maroon">j</font></span>)</span>
 ;<br/>


</div>
