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<b>reconsider </b><font color="Maroon">f</font> =  <a href="partfun1.html#K6">id</a> <span class="p1">(<span class="default"><a href="finseq_1.html#K2">Seg</a> <font color="Maroon">n</font></span>)</span> as   <a href="funct_2.html#NM2">Permutation</a> of  <a href="finseq_1.html#K2">Seg</a> <font color="Maroon">n</font> ;<br/>
<a NAME="E2:20_1_1"/>
<font color="Maroon">f</font> is <a href="matrix_2.html#V3">even</a>
 
<b>by </b><i><a class="ref" href="matrix_2.html#T29">MATRIX_2:29</a></i>;<br/>
<b>hence </b><a NAME="E3:20_1_1"/>
 ex <font color="Olive">b<sub>1</sub></font> being  <a href="funct_2.html#NM2">Permutation</a> of  <a href="finseq_1.html#K2">Seg</a> <font color="Maroon">n</font> st <font color="Olive">b<sub>1</sub></font> is <a href="matrix_2.html#V3">even</a>
 ;<br/>


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