In November 2001 the Mathematical Research Center at Oberwolfach, Germany, hosted the third Conference on Mathematical Models and Numerical Simulation in Electronic Industry. It brought together researchers in mathematics, electrical engineering and scientists working in industry. The contributions to this volume try to bridge the gap between basic and applied mathematics, research in electrical engineering and the needs of industry. Written for: Researchers and postgraduates in model theory, optimization and numerical analysis as well as electrical engineers Keywords: Numerical analysis Numerical simulation