Which of these mathematicians was born at an earlier date, Georg Cantor or Grigory Margulis?
Grigory Margulis Gregori Aleksandrovich Margulis (Russian: Григо́рий Алекса́ндрович Маргу́лис , first name often given as Gregory, Grigori or Grigory; born February 24, 1946) is a Russian-American mathematician known for his work on lattices in Lie groups, and the introduction of methods from ergodic theory into diophantine approximation. He was awarded a Fields Medal in 1978 and a Wolf Prize in Mathematics in 2005, becoming the seventh mathematician to receive both prizes. In 1991, he joined the faculty of Yale University, where he is currently the Erastus L. De Forest Professor of Mathematics.
Feliks Barański Feliks Barański (1915-2006) was a Polish mathematician and an active member of the so-called Lwów School of Mathematics. Born May 1915 in Lwów, Austria-Hungary (modern Lviv, Ukraine), he joined the circle of young, talented mathematicians formed around Stefan Banach and Hugo Steinhaus. During the period of German occupation of his hometown he made his living as a lice feeder in the institute of Rudolf Weigl. Expelled from Lwow after the war, he settled in Kraków, where he joined the local Kraków University of Technology. He was also admitted into the Polish Mathematics Society.