Amid the chaos of revolutionary France, one man’s mathematical obsession gave way to a calculation that now underpins much of ...

Notably, researchers have developed enhanced noncommutative Fourier transforms which yield sharper spectral decompositions on compact and locally compact groups.

Left: Portrait of Joseph Fourier, whose work laid the foundation for Fourier analysis. Right: Amplitude of the 2D Fourier transform of the image; this frequency space is what a radio interferometer ...