Willi Freeden born in 1948 in Kaldenkirchen/Germany, Studies in Mathematics, Geography, and Philosophy at the RWTH Aachen, 1971 ‘Diplom’ in Mathematics, 1972 ‘Staatsexamen’ in Mathematics and Geography, 1975 PhD in Mathematics, 1979 ‘Habilitation’ in Mathematics, 1981/1982 Visiting Research Professor at the Ohio State University, Columbus (Department of Geodetic Sciences and Surveying), 1984 Professor of Mathematics at the RWTH Aachen (Institute of Pure and Applied Mathematics), 1989 Professor of Technomathematics, 1994 Head of the Geomathematics Group, 2002-2006 Vice-president for Research and Technology at the University of Kaiserslautern. Michael Schreiner born in 1966 in Mertesheim/Germany, Studies in Industrial Mathematics, Mechanical Engineering, and Computer Science at the University of Kaiserslautern, 1991 ‘Diplom’ in Industrial Mathematics, 1994 PhD in Mathematics, 2004 ‘Habilitation’ in Mathematics. 1997–2001 researcher and project leader at the Hilti Corp. Schaan,Liechtenstein, 2002 Professor for
