The mth moment of a function on a finite abelian group equals a sum over products of exactly m Fourier coefficients whose indices add to zero in the group.
Sparse Fourier transforms on rank-1 lattices for the rapid and low-memory approximation of functions of many variables
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Statistics of a multi-factor function from its Fourier transform
The mth moment of a function on a finite abelian group equals a sum over products of exactly m Fourier coefficients whose indices add to zero in the group.