Diploma in mathematics, Technology University, Aachen, Federal Republic of Germany, 1974. Doctor of Philosophy, Doctor of National Science, Technology University, Aachen, Federal Republic of Germany, 1976. Habilitation, University Bonn, Federal Republic of Germany, 1981.
Research assistant mathematics Technology University, Aachen, 1974-1976. Assistant professor Institute Applied Mathematics, University Bonn., 1976-1981. Postdoctoral fellow International Business Machines Corporation T.J. Watson Research Center, Yorktown Heights, New York, 1979-1980.
Professor mathematics University Bielefeld, 1981-1987, University Berlin, 1987-1992, University Aachen, Germany, since 1992. Adjunct professor University South Carolina, Columbia, since 2005. Consultant Mental Images, Berlin, 1990.
Served with German army, 1968-1970, member senate German Research Foundation, since 2005, panel Prince Edward Island member European Research Council, since 2006, member German Academy of Sciences, since 2009.
Married Therese Maria Jansen, January 12, 1973. 1 child, Marc.