1959-63 Elementary School at Fulda (Germany),
1963-71 "Gymnasium" at Fulda,
1971-76 Studies of mathematics and physics at the University of Göttingen (Germany)
1976/77 Studies of mathematics at
the University of Minnesota,
Minneapolis
1976 "Diplom-Mathematiker" University of Göttingen
1978 Dr. rer. nat. (Doctor of Natural Science), University of Göttingen
1984 "Habilitation" (Qualification to teach) at the Institute of Technology, Aachen
1977-1986 "Wissenschaftlicher Assistent" at the Institute of Technology at Aachen (Germany)
1986-88 Assistant Professor of Mathematics at the University of Iowa
1988 Promotion to Associate Professor with tenure
1992 Appointment as member of the Program for Applied Mathematical and Computational Sciences, University of Iowa
1998 Promotion to Professor
2012-2013 Interim Director of AMCS, University of Iowa
2021 Retirement