Expose de Kimio MIYAJIMA, Kagoshima University, Japon TITLE: CR structure and its application to deformations of isolated singularities. ABSTRACT: CR structure is an abstract model of boundary structure of bounded domains in complex Euclidean spaces. However, a general strongly pseudco-convex CR structure high-codimensionally embedded in a complex Euclidean space is realized as a boundary structure of a singular variety, whose inside singularities are uniquely determined by assuming that the singular variety is normal. Relying on this boundary viewpoint, I would like to approach to deformation of normal isolated singularity germs.