Johann Radon
Johann Radon ( born December 16, 1887 in Decin, † 25 May 1956 Vienna ) was an Austrian mathematician.
Life
Radon his doctorate in 1910 at the University of Vienna to the doctor of philosophy. The winter semester 1910/11 he spent on the basis of a scholarship at the University of Göttingen, where he heard lectures by David Hilbert et al. After that, he was an assistant at the German Technical University Brno, 1912-1919 assistant at the professorship Mathematics II of the Technical University in Vienna. 1913/14, he completed his habilitation at the University of Vienna: his habilitation application was received on 17 December 1913 in the Office of the Dean of the Faculty of Arts, licensed to teach mathematics was granted to him on 26 August 1914. The title of his habilitation thesis was: " Theory and Application of absolutely additive set functions". During the war he was exempted from military service because of its strong myopia.
In 1919 he was appointed as associate professor at the newly founded University of Hamburg, then in 1922 was made a full professor at the University of Greifswald and 1925 in Erlangen. From 1928 to 1945 he was professor at the University of Breslau.
Because of the impending siege by the Red Army, he was forced to leave with his family in January 1945 Breslau; they came in a roundabout way to Innsbruck, where his wife, a sister lived. After a spell at the University of Innsbruck, he was appointed on 1 October 1946 Professor at the Mathematical Institute of the University of Vienna. In the academic year 1954/55 he was rector of the University of Vienna. The ceremonial inauguration of his rectorate he held on 18 November 1954 speech on the topic " mathematics and knowledge of nature ."
Radon in 1939 corresponding member, 1947 member of the Austrian Academy of Sciences; 1952 to 1956 he was secretary of the mathematics and science class this academy. In 1947 he founded the Monatshefte für Mathematik new. From 1948 to 1950 he was president of the Austrian Mathematical Society.
In 1916, married Johann Radon Marie Rigele, a school teacher who taught science subjects. They had three sons who died, however, at a young age. Her daughter, Brigitte, born in 1924, studied mathematics in Innsbruck and received his doctorate there. In 1950 she married the Austrian mathematician Erich Bukovics.
Radon, like him Curt Christian in 1987 described the unveiling of the memorial bust, was a lovable, kind, popular with students and colleagues to a large extent man, a distinguished personality.
Although he gave the impression of a quiet scholar, but was nevertheless of a social nature, not averse to celebrate. He loved music and took care of the house music, was himself an accomplished violinist and had a beautiful baritone voice; his love of classical literature lasted until last.
Performance and appraisal
Radon was an extremely versatile and productive scientists. His name is above all the Radon transform, which is used in computed tomography, Radon numbers, the set of radon, as well as the important measure theory in the Radon - Nikodym are connected.
The Austrian Academy of Sciences has initiated a radon medal that can be awarded to individuals for contributions to areas where radon worked. It was first awarded in 1992 to Professor Fritz John ( Courant Institute, New York).
In 2003, the Austrian Academy of Sciences, founded in Linz Institute for Computational and Applied Mathematics and named it after Johann Radon ( see web link below).