Differential Geometry and Topology : Proceedings of the Special Year at Nankai Institute of Mathematics Tianjin PR China 1986–87 Dupin submanifolds in lie sphere geometry The mean curvatures on the tubular hypersurfaces in a space of constant curvature Deformation of surfaces preserving principal curvatures Lectures on immersion theory Surface maps and braid equations I Affine maximal surfaces and harmonic functions Codimension 1 and 2 immersions of lens spaces On third order nondegenerate immersions and maps of S 1 in R 2 Complete surfaces in H 3 with a constant principal curvature Exceptional simple lie groups and related topics in recent differential geometry A remark on the isoparametric polynomials of degree 6 On the holomorphic maps from riemann surfaces to grassmannians Stability of totally real minimal submanifolds Dirichlet problems and the Laplacian in affine hypersurface theory A class of symmetric functions and Chern classes of projective varieties Essential invariant circles of surface automorphisms of finite order Jones polynomial and the crossing number of links On complete minimal surfaces with parallel and flat ends Regularity of harmonic maps into certain homogeneous spaces On infinitesimal deformations of surfaces in E 3 Local expressions of classical geometric elliptic operators Volume of geodesic balls On complete minimal immersion : RP 2  {a b}  R 3 with total curvature 10 Local atiyah singer index theorem for families of dirac operators.