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Macaulay2-1.3.1-8.fc15.i686.rpm

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<head><title>splitCharacter -- Decomposes a symmetric polynomial as a sum of schur functions</title>
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<div><h1>splitCharacter -- Decomposes a symmetric polynomial as a sum of schur functions</h1>
<div class="single"><h2>Synopsis</h2>
<ul><li><div class="list"><dl class="element"><dt class="heading">Usage: </dt><dd class="value"><div><tt>splitCharacter(c)</tt></div>
</dd></dl>
</div>
</li>
<li><div class="single">Inputs:<ul><li><span><tt>c</tt>, <span>a <a href="../../Macaulay2Doc/html/___Ring__Element.html">ring element</a></span>, A Symmetric polynomial</span></li>
</ul>
</div>
</li>
<li><div class="single">Outputs:<ul><li><span><tt>p</tt>, <span>a <a href="../../Macaulay2Doc/html/___Ring__Element.html">ring element</a></span></span></li>
</ul>
</div>
</li>
</ul>
</div>
<div class="single"><h2>Description</h2>
<div><div>Expresses a symmetric polynomial c as a linear combination of schur functions</div>
<table class="examples"><tr><td><pre>i1 : c=character({{1,1,1},{2}},4)

      3 3    4         3 2       2 3        4       3   2     2 2 2       3 2
o1 = x x  + x x x  + 2x x x  + 2x x x  + x x x  + 2x x x  + 2x x x  + 2x x x 
      0 1    0 1 2     0 1 2     0 1 2    0 1 2     0 1 2     0 1 2     0 1 2
     ------------------------------------------------------------------------
        3 3     2   3       2 3    3 3        4    4         3 2       2 3  
     + x x  + 2x x x  + 2x x x  + x x  + x x x  + x x x  + 2x x x  + 2x x x 
        0 2     0 1 2     0 1 2    1 2    0 1 2    0 1 3     0 1 3     0 1 3
     ------------------------------------------------------------------------
          4      4         3           2 2           3        4         3 2  
     + x x x  + x x x  + 4x x x x  + 5x x x x  + 4x x x x  + x x x  + 2x x x 
        0 1 3    0 2 3     0 1 2 3     0 1 2 3     0 1 2 3    1 2 3     0 2 3
     ------------------------------------------------------------------------
         2   2         2 2       3 2       2 3           3       2 3    
     + 5x x x x  + 5x x x x  + 2x x x  + 2x x x  + 4x x x x  + 2x x x  +
         0 1 2 3     0 1 2 3     1 2 3     0 2 3     0 1 2 3     1 2 3  
     ------------------------------------------------------------------------
        4        4       3   2     2 2 2       3 2     3   2     2     2  
     x x x  + x x x  + 2x x x  + 2x x x  + 2x x x  + 2x x x  + 5x x x x  +
      0 2 3    1 2 3     0 1 3     0 1 3     0 1 3     0 2 3     0 1 2 3  
     ------------------------------------------------------------------------
         2   2     3   2     2 2 2         2 2     2 2 2       3 2       3 2
     5x x x x  + 2x x x  + 2x x x  + 5x x x x  + 2x x x  + 2x x x  + 2x x x 
       0 1 2 3     1 2 3     0 2 3     0 1 2 3     1 2 3     0 2 3     1 2 3
     ------------------------------------------------------------------------
        3 3     2   3       2 3    3 3     2   3           3     2   3  
     + x x  + 2x x x  + 2x x x  + x x  + 2x x x  + 4x x x x  + 2x x x  +
        0 3     0 1 3     0 1 3    1 3     0 2 3     0 1 2 3     1 2 3  
     ------------------------------------------------------------------------
         2 3       2 3    3 3        4        4        4
     2x x x  + 2x x x  + x x  + x x x  + x x x  + x x x
       0 2 3     1 2 3    2 3    0 1 3    0 2 3    1 2 3

o1 : R</pre>
</td></tr>
<tr><td><pre>i2 : splitCharacter(c)

o2 = s      + s
      4,1,1    3,3

o2 : schurRing (s, 4)</pre>
</td></tr>
</table>
</div>
</div>
<div class="waystouse"><h2>Ways to use <tt>splitCharacter</tt> :</h2>
<ul><li>splitCharacter(RingElement)</li>
</ul>
</div>
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