1979 - 82
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Teaching assistant, University of Bonn.
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1982 - 85
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Scientific assistant, Max-Planck-Institut für Mathematik, Bonn.
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1986
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Lecturer in Mathematics, University of Pennsylvania, Philadelphia, USA.
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1986 - 92
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Assistant professor, associated to the chair of F. Hirzebruch, University of Bonn.
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1993
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Research associate at the Max-Planck-Institut für Mathematik, Bonn
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1993 - 2000
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University Professor (professeur titulaire des universités), University of Bordeaux.
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since 2000
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University Professor at the University of Siegen, holding the chair
for Algebra and Number Theory
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Sep. 2001
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Intl. Conference on Jacobi Forms and Applications (CIRM, Luminy).
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Jan. 2004
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Workshop on Automorphic Forms (University of Siegen)
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Jan. 2005
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Workshop on Automorphic Forms (University of Siegen)
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Jan. 2006
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Workshop on Automorphic Forms (University of Siegen)
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May 2007
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Int. Conference on Jacobi Forms and Applications (CIRM, Luminy)
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June 2007
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Workshop on Automorphic Forms (University of Siegen)
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Aug. 2007
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L-functions and modular forms (American Institute of Mathematics,
Palo Alto, California)
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June 2008
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Workshop on Automorphic Forms (University of Siegen)
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Sep. 2009
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Workshop on Automorphic Forms (University of Siegen)
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Dec. 2009
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International Workshop on Modular Forms (Chennai),
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August 2010
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International Workshop on Modular Forms (Chennai),
as satellite conference to the International Conference of Mathematics in
Hyderabad
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