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<b>let </b><font color="Maroon">seq</font> be   <a href="comseq_1.html#NM1">Complex_Sequence</a>;<br/>

<b>assume </b><a NAME="E1:54"/><i><font color="Green">E32</font></i>: 
<font color="Maroon">seq</font> is <a href="comseq_1.html#V1" target="_self">non-zero</a>
 ;<br/>

<a NAME="E2:54"/>
(  <a href="complex1.html#K10">-</a> <span class="p1">(<span class="default"><a href="complex1.html#K10">-</a> <a href="complex1.html#K6">1r</a> </span>)</span> <a href="hidden.html#R1">=</a>  <a href="complex1.html#K6">1r</a>  &amp;  <a href="complex1.html#K10">-</a> <span class="p1">(<span class="default"><a href="complex1.html#K10">-</a> <a href="complex1.html#K5">0c</a> </span>)</span> <a href="hidden.html#R1">=</a>  <a href="complex1.html#K5">0c</a>  )
 
;<br/>
<a NAME="E3:54"/><b>then </b>
<span class="p1">(<span class="default"><a href="complex1.html#K10">-</a> <a href="complex1.html#K6">1r</a> </span>)</span> <a href="comseq_1.html#K4" target="_self">(#)</a> <font color="Maroon">seq</font> is <a href="comseq_1.html#V1" target="_self">non-zero</a>
 
<b>by </b><i>, <a class="ref" href="comseq_1.html#T2" target="_self">Th2</a>, <a class="ref" href="complex1.html#T12">COMPLEX1:12</a>, <a class="ref" href="complex1.html#T15">COMPLEX1:15</a></i>;<br/>
<b>hence </b><a NAME="E4:54"/>
 <a href="comseq_1.html#K5" target="_self">-</a> <font color="Maroon">seq</font> is <a href="comseq_1.html#V1" target="_self">non-zero</a>
 <b>by </b><i/>;<br/>


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