John W. Campbell because of lack of credits for French and trigonometry. He also attended, without graduating, the Massachusetts Institute of Technology (MIT), where he was befriended by the mathematician Norbert Wiener (who coined the term "cybernetics") – but he failed German and MIT dismissed him. After one year at Duke University, he graduated with a Bachelor of Science in physics in 1932. Campbell began writing science fiction at age 18 while attending MIT and sold his first stories quickly. From January 1930 to June 1931, "Amazing Stories" published six of his short stories, one novel, and six letters. Campbell was editor of
Wiener–Lévy theorem Wiener–Lévy theorem Wiener–Lévy theorem is a theorem in Fourier analysis, which states that a function of an absolutely convergent Fourier series has an absolutely convergent Fourier series under some conditions. The theorem was named after Norbert Wiener and Paul Lévy. Norbert Wiener first proved Wiener's 1/"f" theorem, see Wiener's theorem. It states that if has absolutely convergent Fourier series and is never zero, then its inverse also has an absolutely convergent Fourier series. Paul Levy generalized Wiener's result, showing that Let formula_1 be a absolutely convergent Fourier series with The values of formula_3 lie on a curve formula_4, and formula_5