Proceedings of the Workshop on Geometry and its Applications in honor of Morio Obata, Yokohama, Japan, 19-21 November 1991

Graphic projections and cyclic cohomology theory, H. Moriyoshi a rigidity theorem after Obata and Lelong-Ferrand, Y. Kamishima results on a conformally invariant variational problem, S. Takakuwa an asymptotic estimate for a convergence of harmonic maps, H. Naito minimal surfaces of constant curvature in complex space forms, K. Kenmotsu harmonic maps of unbounded convex polygons in the hyperbolic plane, S. Nishikawa et al topological triviality of plane-to-plane singularities, T. Fukuda on projective transformations of Riemannian manifolds, S. Tanno the algebra of quantum groups as quantized Poisson manifolds, H. Omori et al and others.