Leo Sario

Leo Reino Sario (born May 18, 1916 in Lieksa ; † August 15, 2009 in Santa Monica ) was a Finnish mathematician who dealt with function theory .

Sario served as an artillery officer in the Finnish Army during the Finnish Winter War and World War II. He received his doctorate in 1948 at the University of Helsinki under Rolf Nevanlinna (on Riemann surfaces with a liftable edge). In 1950 he went to the USA, was at the Institute for Advanced Study , Princeton University and the Massachusetts Institute of Technology . In 1954 he became a professor at the University of California, Los Angeles , where he retired in 1986. He died of a heart attack in his Santa Monica home.

He published monographs and textbooks on Riemann surfaces and value distribution theory and other topics of function theory. The theory of principal functions on Riemann surfaces comes from him .

In 1957 he received the Commander's Cross of the Finnish Order of Knights.

Fonts

• with Lars Ahlfors : Riemann surfaces, Princeton mathematical series 26, Princeton UP 1960
• with Kiyoshi Noshiro: Value Distribution Theory, Van Nostrand 1966
• with Burton Rodin: Principal Functions, Springer 1968, Van Nostrand 1968
• with Kōtarō Oikawa Capacity Functions, Basic Teachings of Mathematical Sciences 149, Springer 1969
• with Mitsuru Nakai : Classification Theory of Riemann Surfaces, Grundlehren der Mathematischen Wissenschaften 164, Springer 1970
• with Mitsuru Nakai, Cecilia Wang, Lung Ock Chung: Classification Theory of Riemannian Manifolds: Harmonic, quasiharmonic and biharmonic functions, Lecture Notes in Mathematics 605, Springer 1977
• Capacity of a boundary and of a boundary element, Annals of Mathematics, Volume 59, 1954, pp. 135-144

Individual evidence

1. ↑ Leo Sario in the Mathematics Genealogy Project (English)
2. ↑ Obituary at UCLA 2009
3. ↑ Membership Book of IAS 1980