Igor Shafarevich

Igor Rostislavovich Shafarevich (; 3 June 1923 – 19 February 2017) was a Russian mathematician. He contributed to algebraic number theory and algebraic geometry. He also wrote books and articles which criticise socialism. He was an important dissident during the Soviet regime. He was born in Zhytomyr, Ukraine.
Shafarevich died on 19 February 2017 in Moscow, at the age of 93.