Figure 1. The spectrum of an input voltage is calculated using an FFT application. (See article inside, page 9.) Figure 2. A butterfly computation is used to perform an FFT for N = 8. (See article inside, page 10.)
Journal:
:international journal of group theory2015
martyn dixon leonid kurdachenko aleksander pypka
this paper gives a short survey of some of the known results generalizing the theorem, credited to i. schur, that if the central factor group is finite then the derived subgroup is also finite.