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Symmetrized reduced distribution function
Definition
$ \bar f_s $ … Reduced distribution function |
$f_s:=\frac{1}{s!}\sum_\pi \bar f_s$ |
where $\sum_\pi$ is the sum over argument-permutations, e.g.
$\sum_\pi g(a,b,c)=g(a,b,c)+g(c,a,b)+g(b,c,a)+g(a,c,b)+g(b,a,c)+g(c,b,a)$.