Difference between revisions of "Symmetric sum"
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Revision as of 07:49, 21 October 2017
A symmetric sum is any sum in which any permutation of the variables leaves the sum unchanged.
One way to generate symmetric sums is using symmetric sum notation. If 
is a function of 
variables then the symmetric sum 
, where 
ranges over all permutations of 
.
All symmetric sums can be written as a polynomial of elementary symmetric sums.
See also
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