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:1998
卷号:21
期号:2
页码:249-254
DOI:10.1155/S0161171298000350
出版社:Hindawi Publishing Corporation
摘要:
In this paper, We prove that every ( ϵ ) -sasakian manifold is a hypersurface of an indefinite kaehlerian manifold, and give a necessary and sufficient condition for a Riemannian manifold to be an ( ϵ ) -sasakian manifold.