Christiane Tretter (born 28 December 1964) is a German mathematician and mathematical physicist who works as a professor in the Mathematical Institute (MAI) of the

University of Bern The University of Bern (german: Universität Bern, french: Université de Berne, la, Universitas Bernensis) is a university in the Switzerland, Swiss capital of Bern and was founded in 1834. It is regulated and financed by the Canton of Bern. It ...

in Switzerland, and as managing director of the institute. Her research interests include

differential operator In mathematics, a differential operator is an operator defined as a function of the differentiation operator. It is helpful, as a matter of notation first, to consider differentiation as an abstract operation that accepts a function and return ...

s and

spectral theory In mathematics, spectral theory is an inclusive term for theories extending the eigenvector and eigenvalue theory of a single square matrix to a much broader theory of the structure of operators in a variety of mathematical spaces. It is a result o ...

Education and career

Tretter studied mathematics, with a minor in physics, at the

University of Regensburg The University of Regensburg (german: link=no, Universität Regensburg) is a public research university located in the medieval city of Regensburg, Bavaria, a city that is listed as a UNESCO World Heritage Site. The university was founded on 18 ...

, earning a

diplom A ''Diplom'' (, from grc, δίπλωμα ''diploma'') is an academic degree in the German-speaking countries Germany, Austria, and Switzerland and a similarly named degree in some other European countries including Albania, Bulgaria, Belarus ...

a in 1989, a Ph.D. in 1992, and a

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 1998. Her doctoral dissertation, ''Asymptotische Randbedingungen für Entwicklungssätze bei Randeigenwertproblemen zu

N(y) = \lambda P(y)

mit

\lambda

-abhängigen Randbedingungen'', was supervised by Reinhard Mennicken. She became a lecturer at the

University of Leicester , mottoeng = So that they may have life , established = , type = public research university , endowment = £20.0 million , budget = £326 million , chancellor = David Willetts , vice_chancellor = Nishan Canagarajah , head_labe ...

in 2000, moved to the

University of Bremen The University of Bremen (German: ''Universität Bremen'') is a public university in Bremen, Germany, with approximately 23,500 people from 115 countries. It is one of 11 institutions which were successful in the category "Institutional Strategi ...

as a professor in 2002, and took her present position in Bern in 2006. Since 2008 she has been editor-in-chief of the journal ''

Integral Equations and Operator Theory ''Integral Equations and Operator Theory'' is a journal dedicated to operator theory and its applications to engineering and other mathematical sciences. As some approaches to the study of integral equations (theoretically and numerically) constitu ...

''.

Books

Tretter is the author of two mathematical monographs, ''Spectral Theory of Block Operator Matrices and Applications'' (2008) and ''On Lambda-Nonlinear-Boundary-Eigenvalue-Problems'' (1993), and of two textbooks in

mathematical analysis Analysis is the branch of mathematics dealing with continuous functions, limit (mathematics), limits, and related theories, such as Derivative, differentiation, Integral, integration, measure (mathematics), measure, infinite sequences, series (m ...

Recognition

Tretter won the Richard von Mises Prize of the

Gesellschaft für Angewandte Mathematik und Mechanik Gesellschaft für Angewandte Mathematik und Mechanik ("Society of Applied Mathematics and Mechanics"), often referred to by the acronym GAMM, is a German society for the promotion of science, founded in 1922 by the physicist Ludwig Prandtl and th ...

in 1995.

References

External links

* {{DEFAULTSORT:Tretter, Christiane 1964 births Living people 20th-century German mathematicians German women mathematicians German expatriates in England German expatriates in Switzerland University of Regensburg alumni Academics of the University of Leicester Academic staff of the University of Bremen Academic staff of the University of Bern 21st-century German mathematicians 20th-century German women 21st-century German women