Ruixiang Zhang is a mathematician specializing in Euclidean harmonic analysis, analytic number theory, geometry and additive combinatorics. He is an assistant professor in the Department of Mathematics at University of California, Berkeley.[1] He and collaborator Shaoming Guo of the University of Wisconsin proved a multivariable generalization of the central conjecture in Vinogradov's mean-value theorem. Zhang was awarded the 2023 SASTRA Ramanujan Prize for his contributions to mathematics.[2]
Zhang was born and raised in the People's Republic of China. Representing China, he earned a gold medal at the 2008 International Mathematical Olympiad held in Madrid. He obtained a BS degree from Peking University in 2012 and a PhD from Princeton University in 2017. At Princeton, Zhang worked under the supervision of Peter Sarnak; his doctoral dissertation was Perturbed Brascamp-Lieb inequalities and application to Parsell-Vinogradov systems. After receiving his PhD, Zhang remained in Princeton for a post-doctoral year as a member of the Institute for Advanced Study and then spent three years as the Van Vleck Visiting Assistant Professor at the University of Wisconsin-Madison. In 2020, he returned to Princeton and spent one more year as a member of the Institute for Advanced Study. He has been a member of the Berkeley mathematics faculty since July 2021.[1]
Zhang's contributions to mathematics include a generalization of an important conjecture in Vinogradov's Mean-Value Theorem, using novel techniques to solve Carleson's problem on pointwise convergence of solutions to the Schrödinger equation and solving the two-dimensional case of Sogge's conjecture for wave equations.[2] [3]
Two of Zhang's research papers were selected for the Frontier Science Award in two separate categories during the International Congress for Basic Science held in Beijing in July 2023.[4] He is a recipient of the Sloan Research Fellowship and a winner of the Silver Prize for his doctoral thesis in the 5th New World Mathematics Awards.[5] He is an Editor of Bulletin of the London Mathematical Society, Journal of the London Mathematical Society[6] and Pacific Journal of Mathematics.[7]