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<b>let </b><font color="Maroon">X</font> be   <a href="clopban2.html#NM3">Complex_Banach_Algebra</a>;<br/><b>let </b><font color="Maroon">z1</font> be   <a href="struct_0.html#NM1">Element</a> of <font color="Maroon">X</font>;<br/><b>let </b><font color="Maroon">z2</font> be   <a href="struct_0.html#NM1">Element</a> of <font color="Maroon">X</font>;<br/>





<b>assume </b><a NAME="E1:48"/><i><font color="Green">E51</font></i>: 
<font color="Maroon">z1</font>,<font color="Maroon">z2</font> <a href="clopban4.html#R1" target="_self">are_commutative</a> 
 ;<br/>

<a NAME="E2:48"/><i><font color="Green">E52</font></i>: 
 <a href="clopban3.html#K1">Partial_Sums</a> <span class="p1">(<span class="default"><font color="Maroon">z2</font> <a href="clopban4.html#K1" target="_self">ExpSeq</a> </span>)</span> is <a href="clvect_1.html#V6">convergent</a>
 
<b>by </b><i><a class="ref" href="clopban3.html#D2">CLOPBAN3:def 2</a></i>;<br/>
<a NAME="E3:48"/><i><font color="Green">E53</font></i>: 
<font color="Maroon">z1</font> <a href="clopban3.html#K4">*</a> <span class="p1">(<span class="default"><font color="Maroon">z2</font> <a href="clopban4.html#K1" target="_self">ExpSeq</a> </span>)</span> <a href="funct_2.html#R2">=</a> <span class="p1">(<span class="default"><font color="Maroon">z2</font> <a href="clopban4.html#K1" target="_self">ExpSeq</a> </span>)</span> <a href="clopban3.html#K5">*</a> <font color="Maroon">z1</font>
 
<div><a class="txt" onclick="hs2(this)" href="javascript:()" title="48_1"><b>proof </b></a><div class="add">

<div><a class="txt" onclick="hs2(this)" href="javascript:()" title="48_1_1"><b>now </b></a><div class="add"><b>let </b><font color="Maroon">n</font> be    <a href="subset_1.html#M2">Element</a> of  <a href="numbers.html#K5">NAT</a> ;<br/><b>thus </b><span class="p1">(<span class="default"><font color="Maroon">z1</font> <a href="clopban3.html#K4">*</a> <span class="p2">(<span class="default"><font color="Maroon">z2</font> <a href="clopban4.html#K1" target="_self">ExpSeq</a> </span>)</span></span>)</span> <a href="normsp_1.html#K2">.</a> <font color="Maroon">n</font> = 
<font color="Maroon">z1</font> <a href="group_1.html#K1">*</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><font color="Maroon">z2</font> <a href="clopban4.html#K1" target="_self">ExpSeq</a> </span>)</span> <a href="normsp_1.html#K2">.</a> <font color="Maroon">n</font></span>)</span>
<b>by </b><i><a class="ref" href="clopban3.html#D8">CLOPBAN3:def 8</a></i>
<br/>.= 
<font color="Maroon">z1</font> <a href="group_1.html#K1">*</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="complex1.html#K6">1r</a>  <a href="complex1.html#K13">/</a> <span class="p3">(<span class="default"><font color="Maroon">n</font> <a href="sin_cos.html#K4">!c</a> </span>)</span></span>)</span> <a href="clvect_1.html#K1">*</a> <span class="p2">(<span class="default"><font color="Maroon">z2</font> <a href="clopban3.html#K9">#N</a> <font color="Maroon">n</font></span>)</span></span>)</span>
<b>by </b><i/>
<br/>.= 
<span class="p1">(<span class="default"><a href="complex1.html#K6">1r</a>  <a href="complex1.html#K13">/</a> <span class="p2">(<span class="default"><font color="Maroon">n</font> <a href="sin_cos.html#K4">!c</a> </span>)</span></span>)</span> <a href="clvect_1.html#K1">*</a> <span class="p1">(<span class="default"><font color="Maroon">z1</font> <a href="group_1.html#K1">*</a> <span class="p2">(<span class="default"><font color="Maroon">z2</font> <a href="clopban3.html#K9">#N</a> <font color="Maroon">n</font></span>)</span></span>)</span>
<b>by </b><i><a class="ref" href="clopban3.html#T42">CLOPBAN3:42</a></i>
<br/>.= 
<span class="p1">(<span class="default"><a href="complex1.html#K6">1r</a>  <a href="complex1.html#K13">/</a> <span class="p2">(<span class="default"><font color="Maroon">n</font> <a href="sin_cos.html#K4">!c</a> </span>)</span></span>)</span> <a href="clvect_1.html#K1">*</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><font color="Maroon">z2</font> <a href="clopban3.html#K9">#N</a> <font color="Maroon">n</font></span>)</span> <a href="group_1.html#K1">*</a> <font color="Maroon">z1</font></span>)</span>
<b>by </b><i>, </i>
<br/>.= 
<span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="complex1.html#K6">1r</a>  <a href="complex1.html#K13">/</a> <span class="p3">(<span class="default"><font color="Maroon">n</font> <a href="sin_cos.html#K4">!c</a> </span>)</span></span>)</span> <a href="clvect_1.html#K1">*</a> <span class="p2">(<span class="default"><font color="Maroon">z2</font> <a href="clopban3.html#K9">#N</a> <font color="Maroon">n</font></span>)</span></span>)</span> <a href="group_1.html#K1">*</a> <font color="Maroon">z1</font>
<b>by </b><i><a class="ref" href="clopban3.html#T42">CLOPBAN3:42</a></i>
<br/>.= 
<span class="p1">(<span class="default"><span class="p2">(<span class="default"><font color="Maroon">z2</font> <a href="clopban4.html#K1" target="_self">ExpSeq</a> </span>)</span> <a href="normsp_1.html#K2">.</a> <font color="Maroon">n</font></span>)</span> <a href="group_1.html#K1">*</a> <font color="Maroon">z1</font>
<b>by </b><i/>
<br/>.= 
<span class="p1">(<span class="default"><span class="p2">(<span class="default"><font color="Maroon">z2</font> <a href="clopban4.html#K1" target="_self">ExpSeq</a> </span>)</span> <a href="clopban3.html#K5">*</a> <font color="Maroon">z1</font></span>)</span> <a href="normsp_1.html#K2">.</a> <font color="Maroon">n</font>
<b>by </b><i><a class="ref" href="clopban3.html#D9">CLOPBAN3:def 9</a></i>
;<br/></div><b>end;</b></div>
<b>hence </b><a NAME="E2:48_1"/>
<font color="Maroon">z1</font> <a href="clopban3.html#K4">*</a> <span class="p1">(<span class="default"><font color="Maroon">z2</font> <a href="clopban4.html#K1" target="_self">ExpSeq</a> </span>)</span> <a href="funct_2.html#R2">=</a> <span class="p1">(<span class="default"><font color="Maroon">z2</font> <a href="clopban4.html#K1" target="_self">ExpSeq</a> </span>)</span> <a href="clopban3.html#K5">*</a> <font color="Maroon">z1</font>
 <b>by </b><i><a class="ref" href="funct_2.html#T113">FUNCT_2:113</a></i>;<br/>


</div><b>end;</b></div>
<b>thus </b><font color="Maroon">z1</font> <a href="group_1.html#K1">*</a> <span class="p1">(<span class="default"><a href="clopban4.html#K8" target="_self">exp</a> <font color="Maroon">z2</font></span>)</span> = 
<font color="Maroon">z1</font> <a href="group_1.html#K1">*</a> <span class="p1">(<span class="default"><a href="clopban3.html#K2">Sum</a> <span class="p2">(<span class="default"><font color="Maroon">z2</font> <a href="clopban4.html#K1" target="_self">ExpSeq</a> </span>)</span></span>)</span>
<b>by </b><i/>
<br/>.= 
<font color="Maroon">z1</font> <a href="group_1.html#K1">*</a> <span class="p1">(<span class="default"><a href="clvect_1.html#K11">lim</a> <span class="p2">(<span class="default"><a href="clopban3.html#K1">Partial_Sums</a> <span class="p3">(<span class="default"><font color="Maroon">z2</font> <a href="clopban4.html#K1" target="_self">ExpSeq</a> </span>)</span></span>)</span></span>)</span>
<b>by </b><i><a class="ref" href="clopban3.html#D3">CLOPBAN3:def 3</a></i>
<br/>.= 
 <a href="clvect_1.html#K11">lim</a> <span class="p1">(<span class="default"><font color="Maroon">z1</font> <a href="clopban3.html#K4">*</a> <span class="p2">(<span class="default"><a href="clopban3.html#K1">Partial_Sums</a> <span class="p3">(<span class="default"><font color="Maroon">z2</font> <a href="clopban4.html#K1" target="_self">ExpSeq</a> </span>)</span></span>)</span></span>)</span>
<b>by </b><i>, </i>
<br/>.= 
 <a href="clvect_1.html#K11">lim</a> <span class="p1">(<span class="default"><a href="clopban3.html#K1">Partial_Sums</a> <span class="p2">(<span class="default"><font color="Maroon">z1</font> <a href="clopban3.html#K4">*</a> <span class="p3">(<span class="default"><font color="Maroon">z2</font> <a href="clopban4.html#K1" target="_self">ExpSeq</a> </span>)</span></span>)</span></span>)</span>
<b>by </b><i/>
<br/>.= 
 <a href="clvect_1.html#K11">lim</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="clopban3.html#K1">Partial_Sums</a> <span class="p3">(<span class="default"><font color="Maroon">z2</font> <a href="clopban4.html#K1" target="_self">ExpSeq</a> </span>)</span></span>)</span> <a href="clopban3.html#K5">*</a> <font color="Maroon">z1</font></span>)</span>
<b>by </b><i><a class="ref" href="clopban4.html#D1" target="_self">Def1</a>, </i>
<br/>.= 
<span class="p1">(<span class="default"><a href="clvect_1.html#K11">lim</a> <span class="p2">(<span class="default"><a href="clopban3.html#K1">Partial_Sums</a> <span class="p3">(<span class="default"><font color="Maroon">z2</font> <a href="clopban4.html#K1" target="_self">ExpSeq</a> </span>)</span></span>)</span></span>)</span> <a href="group_1.html#K1">*</a> <font color="Maroon">z1</font>
<b>by </b><i>, </i>
<br/>.= 
<span class="p1">(<span class="default"><a href="clopban3.html#K2">Sum</a> <span class="p2">(<span class="default"><font color="Maroon">z2</font> <a href="clopban4.html#K1" target="_self">ExpSeq</a> </span>)</span></span>)</span> <a href="group_1.html#K1">*</a> <font color="Maroon">z1</font>
<b>by </b><i><a class="ref" href="clopban3.html#D3">CLOPBAN3:def 3</a></i>
<br/>.= 
<span class="p1">(<span class="default"><a href="clopban4.html#K8" target="_self">exp</a> <font color="Maroon">z2</font></span>)</span> <a href="group_1.html#K1">*</a> <font color="Maroon">z1</font>
<b>by </b><i/>
;<br/>


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