Tibor Radó | |
---|---|
Born | |
Died | December 29, 1965 70) | (aged
Nationality | Hungarian |
Alma mater | Franz Joseph University |
Known for | Radó's theorem (Riemann surfaces) Radó's theorem (harmonic functions) Radó–Kneser–Choquet theorem Covering problem of Rado Busy beaver problem |
Scientific career | |
Fields | Mathematics |
Tibor Radó (June 2, 1895 – December 29, 1965) was a Hungarian mathematician who moved to the United States after World War I.
Radó was born in Budapest and between 1913 and 1915 attended the Polytechnic Institute, studying civil engineering. In World War I, he became a First Lieutenant in the Hungarian Army and was captured on the Russian Front. He escaped from a Siberian prisoner camp and, traveling thousands of miles across Arctic wasteland, managed to return to Hungary.
He received a doctorate from the Franz Joseph University in 1923. He taught briefly at the university and then became a research fellow in Germany for the Rockefeller Foundation. In 1929, he moved to the United States and lectured at Harvard University and the Rice Institute before obtaining a faculty position in the Department of Mathematics at Ohio State University in 1930. In 1935 he was granted American citizenship. In World War II he was a science consultant to the United States government, interrupting his academic career. He became Chairman of the Department of Mathematics at Ohio State University in 1948.
In the 1920s, he proved that surfaces have an essentially unique triangulation. In 1933, Radó published "On the Problem of Plateau" in which he gave a solution to Plateau's problem, and in 1935, "Subharmonic Functions". His work focused on computer science in the last decade of his life and in May 1962 he published one of his most famous results in the Bell System Technical Journal : the busy beaver function and its non-computability ("On Non-Computable Functions").
He died in New Smyrna Beach, Florida.
Oswald Veblen was an American mathematician, geometer and topologist, whose work found application in atomic physics and the theory of relativity. He proved the Jordan curve theorem in 1905; while this was long considered the first rigorous proof of the theorem, many now also consider Camille Jordan's original proof rigorous.
Harold Calvin Marston Morse was an American mathematician best known for his work on the calculus of variations in the large, a subject where he introduced the technique of differential topology now known as Morse theory. The Morse–Palais lemma, one of the key results in Morse theory, is named after him, as is the Thue–Morse sequence, an infinite binary sequence with many applications.
Jean Alexandre Eugène Dieudonné was a French mathematician, notable for research in abstract algebra, algebraic geometry, and functional analysis, for close involvement with the Nicolas Bourbaki pseudonymous group and the Éléments de géométrie algébrique project of Alexander Grothendieck, and as a historian of mathematics, particularly in the fields of functional analysis and algebraic topology. His work on the classical groups, and on formal groups, introducing what now are called Dieudonné modules, had a major effect on those fields.
Edward Charles "Ted" Titchmarsh was a leading British mathematician.
Nathan Jacobson was an American mathematician.
Guido Karl Heinrich Hoheisel was a German mathematician and professor of mathematics at the University of Cologne.
Lipman Bers was a Latvian-American mathematician, born in Riga, who created the theory of pseudoanalytic functions and worked on Riemann surfaces and Kleinian groups. He was also known for his work in human rights activism.
David Mark Goss was a mathematician, a professor in the department of mathematics at Ohio State University, and the editor-in-chief of the Journal of Number Theory. He received his B.S. in mathematics in 1973 from University of Michigan and his Ph.D. in 1977 from Harvard University under the supervision of Barry Mazur; prior to Ohio State he held positions at Princeton University, Harvard, the University of California, Berkeley, and Brandeis University. He worked on function fields and introduced the Goss zeta function.
Heinrich Adolph Louis Behnke was a German mathematician and rector at the University of Münster.
Robert Schatten was an American mathematician.
Leon Lichtenstein was a Polish-German mathematician, who made contributions to the areas of differential equations, conformal mapping, and potential theory. He was also interested in theoretical physics, publishing research in hydrodynamics and astronomy.
John Charles Chenoweth McKinsey, usually cited as J. C. C. McKinsey, was an American mathematician known for his work on game theory and mathematical logic, particularly, modal logic.
Edward James McShane was an American mathematician noted for his advancements of the calculus of variations, integration theory, stochastic calculus, and exterior ballistics. His name is associated with the McShane–Whitney extension theorem and McShane integral. McShane was professor of mathematics at the University of Virginia, president of the American Mathematical Society, president of the Mathematical Association of America, a member of the National Science Board and a member of both the National Academy of Sciences and the American Philosophical Society.
Henry P. McKean, Jr. is an American mathematician at the Courant Institute in New York University. He works in various areas of analysis. He obtained his PhD in 1955 from Princeton University under William Feller.
Albert Charles Schaeffer was an American mathematician who worked on complex analysis.
Pierre Euclide Conner was an American mathematician, who worked on algebraic topology and differential topology.
Harold Thayer Davis was a mathematician, statistician, and econometrician, known for the Davis distribution.
Edwin Earl Floyd was an American mathematician, specializing in topology.
Kurt Strebel was a Swiss mathematician, specializing in geometric function theory.
David Drasin is an American mathematician, specializing in function theory.