Multivariate Approximation and Interpolation Proceedings of an International Workshop held at the University of Duisburg, August 14–18, 1989

The "International Workshop on Multivariate Approximation and Interpolation" was held at the University of Duisburg, Germany, during August 14-18, 1989. It was the second workshop in aseries which started in 1986 at the University of Chile in Santiago with a previous conference on a similar subject (cf. Topics in Multivariate Approximation, C.K. Chui et al. (Eds.), Academic Press, New York, 1987). The conference was organized by an international organizing committee consisting of Charles Chui (USA), Werner Haussmann (Germany), Kurt Jetter (Germany), Larry Schumaker (USA), and Florencio Utreras (Chile). In addition, the local organizing committee included Hans-Bernd Knoop, Hauke Kruger, and Joachim Stockler from the University of Duisburg. We would like to thank all of them for their constant support. We also acknowledge the efforts of Uta Dick, Sabine Haussler, and Stefanie Messal who did most of the secretarial work. It was our pleasure to see that the workshop brought together 75 participants from 18 countries. 28 leading scientists gave invited (research or survey) lectures, with 24 of them summarized in the papers included in this proceedings volume. The topics of these lectures gave a state-of-the-art overview of current research in Multivariate Approximation and Interpolation, and they reflected the rapid development of the area."