The maximum number of threads a parallelized math function will use. The default value is (max 1 (processor-count)).
A parameter controlling the convention used for scaling discrete Fourier transforms, such as those performed by array-fft. The default value is '(1 -1), which represents the convention used in signal processing.
In general, if lst is (list a b) and n is the length of a transformed array axis or vector, then
Conveniently, a Fourier transform with convention (list (- a) (- b)) is the inverse of a Fourier transform with convention (list a b).
See Mathematica’s documentation on Fourier, from which this excellent idea was stolen.
Returns the convention used for inverse Fourier transforms, given the current convention.