Harro Heuser (December 26, 1927 in

Nastätten Nastätten is a municipality in the Rhein-Lahn-Kreis, in Rhineland-Palatinate, Germany. It is situated in the Taunus, approx. 25 km southeast of Koblenz, and 35 km northwest of Wiesbaden. Nastätten is the seat of the ''Verbandsgemeinde ...

– February 21, 2011) was a

German German(s) may refer to: * Germany (of or related to) **Germania (historical use) * Germans, citizens of Germany, people of German ancestry, or native speakers of the German language ** For citizens of Germany, see also German nationality law **Ger ...

mathematician A mathematician is someone who uses an extensive knowledge of mathematics in their work, typically to solve mathematical problems. Mathematicians are concerned with numbers, data, quantity, structure, space, models, and change. History On ...

. In German-speaking countries he is best known for his popular two-volume introduction into real

analysis Analysis ( : analyses) is the process of breaking a complex topic or substance into smaller parts in order to gain a better understanding of it. The technique has been applied in the study of mathematics and logic since before Aristotle (38 ...

, ''Lehrbuch der Analysis''. Heuser studied mathematics, physics and philosophy from 1948 to 1954 at the

University of Tübingen The University of Tübingen, officially the Eberhard Karl University of Tübingen (german: Eberhard Karls Universität Tübingen; la, Universitas Eberhardina Carolina), is a public research university located in the city of Tübingen, Baden-Wü ...

to receive a teaching degree (''Staatsexamen'') and went on to study for his PhD, which he received in 1957. The advisor of his thesis, entitled ''Über Operatoren mit endlichen Defekten'', was

Helmut Wielandt __NOTOC__ Helmut Wielandt (19 December 1910 – 14 February 2001) was a German mathematician who worked on permutation groups. He was born in Niedereggenen, Lörrach, Germany. He gave a plenary lecture ''Entwicklungslinien in der Strukturtheorie d ...

. After receiving his PhD he moved to the

University of Karlsruhe The Karlsruhe Institute of Technology (KIT; german: Karlsruher Institut für Technologie) is a public research university in Karlsruhe, Germany. The institute is a national research center of the Helmholtz Association. KIT was created in 2009 w ...

, where he received his

habilitation Habilitation is the highest university degree, or the procedure by which it is achieved, in many European countries. The candidate fulfills a university's set criteria of excellence in research, teaching and further education, usually including a ...

in 1962. In 1963 he became a professor at the

University of Kiel Kiel University, officially the Christian-Albrecht University of Kiel, (german: Christian-Albrechts-Universität zu Kiel, abbreviated CAU, known informally as Christiana Albertina) is a university in the city of Kiel, Germany. It was founded in ...

and in 1964 at the

University of Mainz The Johannes Gutenberg University Mainz (german: Johannes Gutenberg-Universität Mainz) is a public research university in Mainz, Rhineland Palatinate, Germany, named after the printer Johannes Gutenberg since 1946. With approximately 32,000 stu ...

. Finally in 1968 he became a tenured professor at the

, where he remained until his retirement in 1996. He was also temporarily working as a visiting professor in the

United States The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territorie ...

Canada Canada is a country in North America. Its ten provinces and three territories extend from the Atlantic Ocean to the Pacific Ocean and northward into the Arctic Ocean, covering over , making it the world's second-largest country by tot ...

Colombia Colombia (, ; ), officially the Republic of Colombia, is a country in South America with insular regions in North America—near Nicaragua's Caribbean coast—as well as in the Pacific Ocean. The Colombian mainland is bordered by the Car ...

and

Italy Italy ( it, Italia ), officially the Italian Republic, ) or the Republic of Italy, is a country in Southern Europe. It is located in the middle of the Mediterranean Sea, and its territory largely coincides with the homonymous geographical re ...

.Short bio provided by the publisher in ''Lehrbuch der Analysis - Teil 1'' and ''Als die Götter lachen lernten.'' (German)''

Kürschners Deutscher Gelehrten-Kalender ''Kürschners Deutscher Gelehrten-Kalender'' (English: "Kürschner's Encyclopedia of German Scholars"), formerly subtitled ''Lexikon der lebenden deutschsprachigen Wissenschaftler'' ("Encyclopedia of Living German-Speaking Scholars"), is a German l ...

'' 2007, p. 1409 (German)

Works

*with Heinz Günther Tillmann as editors: ''Funkkolleg Mathematik. Eine Einführung in 2 Bänden''. Fischer 1974 *''Funktionalanalysis. Theorie und Anwendung''. 1975; 4th edition, Teubner 2006,
review
*: English edition: ''Functional Analysis''. Wiley 1982, *''Lehrbuch der Analysis - Teil 1''. 1980; 17th edition, Teubner 2009, *''Lehrbuch der Analysis - Teil 2''. 1981; 14th edition, Teubner 2008, *with Hellmuth Wolf: ''Algebra, Funktionalanalysis und Codierung. Eine Einführung für Ingenieure''. Teubner 1986, *''Gewöhnliche Differentialgleichungen. Einführung in Lehre und Gebrauch''. 1989; 6th edition, Teubner 2009, *''Als die Götter lachen lernten. Griechische Denker verändern die Welt''. 1992; 2nd edition, Piper 1997 *''Die Magie der Zahlen. Von einer seltsamen Lust, die Welt zu ordnen''. Herder 2003, *''Der Physiker Gottes. Isaac Newton oder Die Revolution des Denkens''. Herder 2005, *''Unendlichkeiten. Nachrichten aus dem Grand Canyon des Geistes''. Teubner 2007,

Notes

External links

* Sterling K. Berberia
''Review: Harro Heuser, Funktionanalysis, and Richard B. Holmes, Geometric functional analysis and its applications, and Michael Reed and Barry Simon, Functional analysis, and Michael Reed and Barry Simon, Methods of modern mathematical physics, vol. II, Fourier analysis, self-adjointness''
Bull. Amer. Math. Soc. Volume 82, Number 6, 1976 {{DEFAULTSORT:Heuser, Harro 1927 births 2011 deaths 20th-century German mathematicians University of Tübingen alumni Academic staff of the Karlsruhe Institute of Technology