期刊名称：International Journal of Mathematics and Mathematical Sciences
印刷版ISSN：0161-1712
电子版ISSN：1687-0425
出版年度：1993
卷号：16
DOI：10.1155/S0161171293000675
出版社：Hindawi Publishing Corporation
摘要：We show the existence of ( ϵ )-almost contact metric structures and give examples
of ( ϵ )-Sasakian manifolds. Then we get a classification theorem for real hypersurfaces of
indefinite complex space-forms with parallel structure vector field. We prove that ( ϵ )-Sasakian
real hypersurfaces of a semi-Euclidean space are either open sets of the pseudosphere
S2S2n
