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Prof. Dr.-Ing. Wolfgang Boehm graduated from the Technical University of Berlin. He is a co-founder of Computer Aided Geometric Design (CAGD) in Germany and was a visiting professor at Rensselaer Polytechnic Institute in Troy, NY; at the Northern Polytechnic University in Xi, and at the Universidad Central de Venezela in Caracas. He is co-founder and senior editor of the international journal CAGD.

Hartmut Prautzsch studied Mathematics and Computer Science at the Technische Universitaet Braunschweig. From 1986 to 1987, he was a postdoctoral and junior research fellow at the IBM Research Lab in Yorktown Heights, where he pioneered new techniques for the analysis of subdivision methods with C.A. Micchelli. After three years as assistant professor at the Mathematics Department of the Rensselaer Polytechnic Institute in Troy, Ny, he became professor of Applied Geometry and Computer Graphics at the Universitaet Karlsruhe in1990. Additionally, he has been a member of the board of the Institute for Scientific Computing and Mathematicsl Modelling at Karlsruhe since 1992, and in 2002 he succeeded J. Hoschek as co-editor-in-chief of the journal Computer Aided Geometric Design.