- Johann Radon
Infobox Scientist

name = Johann Radon

box_width = 26em

image_width = 225px

caption =

birth_date =1887-12-16

birth_place =Děčín ,Bohemia ,Austria-Hungary

death_date = death date and age|1956|5|25|1887|12|16

death_place =Vienna ,Austria

residence =

citizenship =

nationality =

ethnicity =

field =Mathematics

work_institutions =University of Vienna ,Austria University of Hamburg ,Germany University of Greifswald ,Germany University of Erlangen,Germany University of Breslau, Germany (nowUniversity of Wrocław , Poland)

alma_mater =University of Vienna ,Austria

doctoral_advisor =Gustav Ritter von Escherich

doctoral_students =

known_for = Radon-Hurwitz numberRadon–Nikodym theorem Radon measure Radon's theorem Radon transform

author_abbrev_bot =

author_abbrev_zoo =

prizes =

religion =

footnotes =**Johann Karl August Radon**(December 16 ,1887 –May 25 ,1956 ) was an Austrianmathematician . His doctoral dissertation was oncalculus of variations (in 1910, at theUniversity of Vienna ).**Life**Radon was born in Tetschen,

Bohemia ,Austria-Hungary , nowDěčín ,Czech Republic . He got his doctor's degree at theUniversity of Vienna in 1910. He spent the winter semester 1910/11 at theUniversity of Göttingen , then he was an assistant at the Deutsche Technische Hochschule Brünn (Brno ), and from 1912 to 1919 at theTechnical University of Vienna . In 1913/14, he passed hishabilitation at the University of Vienna.In 1919, he was called to become Professor extraordinarius at the newly foundedUniversity of Hamburg ; in 1922, he became Professor ordinarius at theUniversity of Greifswald , and in 1925 at theUniversity of Erlangen . Then he was Ordinarius at theUniversity of Breslau from 1928 to 1945.After a short stay at the

University of Innsbruck he became Ordinarius at the Institute of Mathematics of theUniversity of Vienna on October 1, 1946. In 1954/55, he was rector of the University of Vienna.In 1939, Radon became corresponding member of the

Austrian Academy of Sciences , and in 1947, he became a member. From 1952 to 1956, he was Secretary of the Class of Mathematics and Science of this Academy. From 1948 to 1950, he was president of the Austrian Mathematical Society.Johann Radon married Maria Rigele, a secondary school teacher, in 1916. They had three sons who died young or very young, unfortunately. Their daughter Brigitte, born in 1924, obtained a Ph.D. in mathematics at the

University of Innsbruck and married the Austrian mathematician Erich Bukovics in 1950. Brigitte lives in Vienna.Radon, as Curt C. Christian described him in 1987 at the occasion of the unveiling of his brass bust at the

University of Vienna , was a friendly, good-natured man, highly esteemed by students and colleagues alike, a noble personality. He did make the impression of a quiet scholar, but he was also sociable and willing to celebrate. He loved music, and he played music with friends at home, being an excellent violinist himself. His love for classical literature lasted through all his life.In 2003, the

Austrian Academy of Sciences founded an Institute for Computational and Applied Mathematics and named it after Johann Radon (see External link below).**Achievements**Radon is known for a number of lasting contributions, including:

* his part in theRadon-Nikodym theorem ;

* theRadon measure concept of measure aslinear functional ;

* theRadon transform , inintegral geometry , based on integration overhyperplane s — with application totomography forscanner s (seetomographic reconstruction );

*Radon's theorem ;

* theRadon-Hurwitz number s.**External links***

*

* [*http://www.ricam.oeaw.ac.at/ Johann Radon Institute for Computational and Applied Mathematics (RICAM)*]

*Wikimedia Foundation.
2010.*

### Look at other dictionaries:

**Johann Radon**— (* 16. Dezember 1887 in Tetschen; † 25. Mai 1956 in Wien) war ein österreichischer Mathematiker. Johann Radon etwa 1920 Inhaltsverzeichnis … Deutsch Wikipedia**Johann Radon**— Naissance 16 décembre 1887 Tetschen (Autriche Hongrie) Décès 25 mai 1956 Vienne (Autriche) Domicile … Wikipédia en Français**RADON (J.)**— RADON JOHANN (1887 1956) Pensée abstraite et pouvoir d’adaptation fondé sur l’intuition géométrique, tel est le double talent mathématique de l’Autrichien Johann Radon, qui est aussi bien capable de créer une théorie générale ou de traiter un… … Encyclopédie Universelle**Radon (Begriffsklärung)**— Radon ist ein chemisches Element aus der Gruppe der Edelgase, siehe Radon und der Name von folgenden Personen Jenik Radon (* 1946), US amerikanischer Jurist und Hochschullehrer Johann Radon (1887−1956), österreichischer Mathematiker sowie ein… … Deutsch Wikipedia**Radon (Homonymie)**— Cette page d’homonymie répertorie les différents sujets et articles partageant un même nom … Wikipédia en Français**Radon (disambiguation)**— Radon is a chemical element.Radon may also refer to:*Radon, Orne, a town in France *Radon transform, a type of mathematical transform *Johann Radon, an Austrian mathematician *Rodan, known as Radon in Japanese, a fictional monster in the manner… … Wikipedia**Radon transform**— In mathematics, the Radon transform in two dimensions, named after the Austrian mathmematician Johann Radon, is the integral transform consisting of the integral of a function over straight lines. The inverse of the Radon transform is used to… … Wikipedia**Radon-Transformation**— Die Radon Transformation ist eine Integraltransformation einer Funktion in zwei Variablen. Es wird das Integral der Funktion f(x,y) längs aller Geraden der x,y Ebene bestimmt. Für jede dieser Geraden kann man sich die Radon Transformierte Rf als… … Deutsch Wikipedia**Radon measure**— In mathematics (specifically, measure theory), a Radon measure, named after Johann Radon, is a measure on the σ algebra of Borel sets of a Hausdorff topological space X that is locally finite and inner regular. Contents 1 Motivation 2 Definitions … Wikipedia**Radon-Nikodym-Dichte**— In der Mathematik verallgemeinert der Satz von Radon Nikodym die Ableitung auf signierte Maße. Er gibt Auskunft über die Darstellbarkeit eines signierten Maßes durch das Lebesgue Integral einer Funktion und ist von zentraler Bedeutung sowohl für… … Deutsch Wikipedia