died at the age of 84 in Paris, France, on 23 September 1983. Research Even though Mandelbrojt was an early member of the Bourbaki group, and he did take part in a number of Bourbaki gatherings until the breakout of the war, his main research interests were actually quite remote from abstract algebra. As evidenced by his publications (see next), he focused on complex analysis and harmonic analysis, with an emphasis on Dirichlet series, lacunary series, and entire functions. Rather than a Bourbakist, he is perhaps more accurately described as a follower of G. H. Hardy. Together with Norbert Wiener and Torsten Carleman, he can be viewed as a moderate modernizer of classical Fourier analysis. Shmuel Agmon, Jean-Pierre Kahane, Yitzhak Katznelson, and Paul Malliavin are among his students. Selected works Books Lecture notes Articles Thesis Notes References External links . Szolem Mandelbrojt at Collège de France. Szolem Mandelbrojt at Hathi Trust Digital Library. 1899 births 1983 deaths National University of Kharkiv alumni Nicolas Bourbaki 20th-century French mathematicians Polish mathematicians Jewish scientists Academic staff of the Lille University of Science and Technology Members of the French Academy of Sciences Rice University faculty 20th-century Polish Jews Polish emigrants to France