Geodesic
Some properties of the discrete Fourier transform in the field of complex numbers and in the fields of finite characteristics
Prikladnaâ diskretnaâ matematika, no. 12 (2010), pp. 7-9
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We consider the discrete Fourier transform over the field of complex numbers $C$ and over the Galois field $\mathrm{GF}(q)$. The length $N$ of a given vector over $C$ can be any positive integer, and in the Galois field $N$ is multiple to $(q-1)$. This imposes certain restrictions on possibilities for constructing Fast Fourier Algorithms in Galois fields and increases the dimension of input data. 
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     author = {A. M. Grishin},
     title = {Some properties of the discrete {Fourier} transform in the field of complex numbers and in the fields of finite characteristics},
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A. M. Grishin. Some properties of the discrete Fourier transform in the field of complex numbers and in the fields of finite characteristics. Prikladnaâ diskretnaâ matematika, no. 12 (2010), pp. 7-9. http://geodesic.mathdoc.fr/item/PDM_2010_12_a1/

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