Every non-zero complex homomorphism of the almost periodic functions on an abelian group is induced by the Fourier transform. A Plancherel formula for almost periodic functions and a necessary ...

Her unique periodic table would likely have attracted attention on its own, but the United Nations has proclaimed 2019 the International Year of the Periodic Table, and Hu is partnering with Guokr, a ...

Joseph Fourier, born just 250 years ago, introduced a wonderful idea that revolutionised science and mathematics: any function or signal can be broken down into simple periodic sine-waves. Radio ...