Alexander Lubotzky

Alexander "Alex" Lubotzky (born 28 June 1956) is an Israeli mathematician and former politician. He is a professor of mathematics at the Weizmann Institute of Science and professor emeritus at the Hebrew University of Jerusalem, where he held the Maurice and Clara Weil Chair in Mathematics. He served as a member of the Knesset for The Third Way party from 1996 to 1999. Lubotzky is a leading researcher in group theory and its applications to combinatorics and theoretical computer science, known in particular for the construction of Ramanujan graphs and for the theory of high-dimensional expanders. He received the Israel Prize in mathematics and computer science in 2018.