Diploma, University Dortmund, Germany, 1976. Doctor of Philosophy, University Dortmund, Germany, 1982. Examinations, Examinations Board, Münster, Germany, 1984.
Software consultant, Siemens AG, Dortmund, 1985-1990; support center manager, Sni AG, Paderborn, Germany, 1992-1993; service area manager, National Systems Investigation/SIEMENS Ag, Essen, Germany, 1995-1997.
Member Mathematics Society (American and German chapters). Core team BPR Service, BPR Logistics.
Married Reinhild Mayer, June 2, 1975. Children: Alexander, Constantin, Cornelius.