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Is there a way to do a 2D FFT on the Prime?
create two Vandermonde() of the size you want.
and use the double summation that defines 2D FFT
"Vandermonde"? Even google translate gives up.
vandermonde([1,e^(-2pi*i/3),e^(-4pi*i/3)]) to create 3x3 matrix

and use the definition for 2D FFT:
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