Johann Wiards Albert Schröder (4 April 1925,

Norden, Lower Saxony Norden (East Frisian Low Saxon: ''Nörden'') is a town in the district of Aurich, in Lower Saxony, Germany Germany, officially the Federal Republic of Germany, is a country in Central Europe. It lies between the Baltic Sea and the North S ...

– 3 January 2007) was a German mathematician. Schröder studied mathematics and physics at

Leibniz University Hannover Leibniz University Hannover (), also known as the University of Hannover, is a public university, public research university located in Hanover, Germany. Founded on 2 May 1831 as Higher Vocational School, the university has undergone six period ...

and the

University of Göttingen The University of Göttingen, officially the Georg August University of Göttingen (, commonly referred to as Georgia Augusta), is a Public university, public research university in the city of Göttingen, Lower Saxony, Germany. Founded in 1734 ...

. In 1952 at Leibniz University Hannover he received his

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(Ph.D.) under

Lothar Collatz Lothar Collatz (; July 6, 1910 – September 26, 1990) was a German mathematician, born in Arnsberg, Province of Westphalia, Westphalia. The "3''x'' + 1" problem is also known as the Collatz conjecture, named after him and still unsolved. The Col ...

for his thesis ''Fehlerabschätzungen zur Störungsrechnung bei linearen Eigenwertproblemen''. In 1955 Schröder received his

Habilitation Habilitation is the highest university degree, or the procedure by which it is achieved, in Germany, France, Italy, Poland and some other European and non-English-speaking countries. The candidate fulfills a university's set criteria of excelle ...

. From 1955 to 1957 he taught at the

Braunschweig University of Technology TU Braunschweig (, unofficially ''University of Braunschweig – Institute of Technology'') is the oldest ' (comparable to an institute of technology in the American system) in Germany. It was founded in 1745 as Collegium Carolinum and is a membe ...

and from 1957 to 1963 at the

University of Hamburg The University of Hamburg (, also referred to as UHH) is a public university, public research university in Hamburg, Germany. It was founded on 28 March 1919 by combining the previous General Lecture System ('':de:Allgemeines Vorlesungswesen, ...

, where from 1961 to 1963 he was an adjunct professor. In 1963 Schröder was appointed professor at the

University of Cologne The University of Cologne () is a university in Cologne, Germany. It was established in 1388. It closed in 1798 before being re-established in 1919. It is now one of the largest universities in Germany with around 45,187 students. The Universit ...

, where he retired in 1986 as professor emeritus. He was a visiting professor at the

University of Wisconsin–Madison The University of Wisconsin–Madison (University of Wisconsin, Wisconsin, UW, UW–Madison, or simply Madison) is a public land-grant research university in Madison, Wisconsin, United States. It was founded in 1848 when Wisconsin achieved st ...

for the academic year 1960–1961 and at the

University of Washington The University of Washington (UW and informally U-Dub or U Dub) is a public research university in Seattle, Washington, United States. Founded in 1861, the University of Washington is one of the oldest universities on the West Coast of the Uni ...

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for the academic years 1964–1965 and 1969–1970. In 1966 at the

International Congress of Mathematicians The International Congress of Mathematicians (ICM) is the largest conference for the topic of mathematics. It meets once every four years, hosted by the International Mathematical Union (IMU). The Fields Medals, the IMU Abacus Medal (known before ...

Moscow Moscow is the Capital city, capital and List of cities and towns in Russia by population, largest city of Russia, standing on the Moskva (river), Moskva River in Central Russia. It has a population estimated at over 13 million residents with ...

he was a Plenary Speaker with his talk ''Ungleichungen und Fehlerabschätzungen'' (Inequalities and error estimates). He died as a result of an accident and was buried in the Bensberg cemetery.

Selected publications

''Operator Inequalities.''
Academic Press, New York 1980. * ''Linear partial differential equations, self-adjoint partial differential operators, spectral theory.''

American Mathematical Society The American Mathematical Society (AMS) is an association of professional mathematicians dedicated to the interests of mathematical research and scholarship, and serves the national and international community through its publications, meetings, ...

, November 2004.

Sources

* Walter Habel: ''Wer ist wer?'' Lübeck 1993. * Obituary in the ''

Frankfurter Allgemeine Zeitung The (; ''FAZ''; "Frankfurt General Newspaper") is a German newspaper founded in 1949. It is published daily in Frankfurt and is considered a newspaper of record for Germany. Its Sunday edition is the ''Frankfurter Allgemeine Sonntagszeitung'' ( ...

'', 13 January 2007

References

{{DEFAULTSORT:Schroeder, Johann 20th-century German mathematicians 21st-century German mathematicians 1925 births 2007 deaths Leibniz University Hannover alumni Academic staff of the University of Cologne University of Washington faculty University of Wisconsin–Madison faculty