Doctoral degree, University Kiel, Federal Republic Germany, 1952. Habilitation, Universität Würzburg, Federal Republic Germany, 1956. Doctoral degree (honorary), University Karlsruhe, Federal Republic Germany, 1979.
Dozent, Technology U. Aachen, Federal Republic Germany, 1957-1960;
associate professor, Technology U. Aachen, Federal Republic Germany, 1960-1962;
professor, U. Köln, Federal Republic Germany, 1962-1965;
professor, U. Saarbrücken, Federal Republic Germany, 1965-1994;
professor emeritus, U. Saarbrücken, Federal Republic Germany, since 1994. Visiting professor California Institute Technology, Pasadena, California, 1967-1968, U. Washington, Seattle, 1970, U. Witwatersrand, Johannesburg, South Africa, 1992. Visiting scholar, University Texas, Austin, 1978.
Visiting fellow California Institute Technology, 1982-1983, Australian national U., Canberra, 1988-1989.
Founding president Association Friends Hebrew University in the Saar State, 1977. Member of Society Mathematics Economics and Operations Research (founding president 1977-1981), European Mathematics Society, French Mathematics Society, American Mathematics Society, German Mathematics Society, Royal Science Society (Liêge, Belgium) (correspondent).
Married Helga, October 2, 1954, (wid. February 1979); Married Karin Grewin, November 21, 1980. 1 child, Daniel.