Lithuanian mathematician who was known for his work in probability theory and number theory. He was the rector of Vilnius University for 32 years, and he also served a single term in the Lithuanian parliament.
He earned a Candidate of Sciences degree in 1951 from Leningrad University after graduating summa cum laude from Vilnius University in 1946.
He was awarded with the Order of the Lithuanian Grand Duke Gediminas.
He married Ona Kubiliene.
He and Saunders Mac Lane were both well known mathematicians.