Fast generalized DFTs for all finite groups.
For any finite group $G$, we give an arithmetic algorithm to compute generalized Discrete Fourier Transforms (DFTs) with respect to $G$, using $O(|G|^{\omega/2 + \epsilon})$ operations, for any $\epsilon > 0$. Here, $\omega$ is the exponent of matrix multiplication.
Publisher URL: http://arxiv.org/abs/1901.02536
DOI: arXiv:1901.02536v1
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