Vladimir Voevodsky

Vladimir Alexandrovich Voevodsky (; , 4 June 1966 – 30 September 2017) was a Russian-American mathematician. He was born in Moscow.
His work in developing a homotopy theory for algebraic varieties and formulating motivic cohomology led to the award of a Fields Medal in 2002. He was also known for the proof of the Milnor conjecture and motivic Bloch-Kato conjectures and for the univalent foundations of mathematics and homotopy type theory.
Voevodsky died on September 30, 2017 at his home in Princeton, New Jersey of an aortic aneurysm at the age of 51.