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Vladimir Voevodsky, Russian-American mathematician (born 1966)

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Vladimir Voevodsky
Russian mathematician (1966–2017)
Vladimir Alexandrovich Voevodsky was a Russian-American mathematician. 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 is also known for the proof of the Milnor conjecture and…Source: Wikipedia (CC BY-SA)
September 30
Day of the year
September 30 is the 273rd day of the year in the Gregorian calendar; 92 days remain until the end of the year.Source: Wikipedia (CC BY-SA)