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 Transnormal systems on $R^{n+1}_1$ Commun. Korean Math. Soc. 1997 Vol. 12, No. 1, 109-112 Kwang Sung Park, Koonchan Kim, Young Soo Jo Keimyung University, Keimyung University, Keimyung University Abstract : In this paper, we study on a classification of hypersurfaces given by transnormal functions on $R^{n+1}_1$. If $M$ is a level set of a transnormal function on $R^{n+1}_1$, then it is one of a hyperplane, a cylinder around $k$-plane, a pseudo-sphere and a pseudo-hyperbolic space. Keywords : transnormal, isoparametric, null-hypersurface MSC numbers : 53C15 Downloads: Full-text PDF