Ernest Vinberg

Ernest Borisovich Vinberg (; 26 July 1937 – 12 May 2020) was a Russian mathematician. He worked on discrete subgroups of Lie groups and representation theory. He created Vinberg's algorithm and the Koecher–Vinberg theorem.
He was a recipient of the Humboldt Prize. He was on the executive committee of the Moscow Mathematical Society. In 2010, he was elected a member of the American Academy of Arts and Sciences.
Vinberg died on 12 May 2020, aged 82.