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：2004
卷号：2004
DOI：10.1155/S0161171204403342
出版社：Hindawi Publishing Corporation
摘要：We study some properties of a half-lightlike submanifold M, of
a semi-Riemannian manifold, whose shape operator is conformal
to the shape operator of its screen distribution. We show that
any screen distribution S(TM) of M is integrable and the
geometry of M has a close relation with the nondegenerate
geometry of a leaf of S(TM). We prove some results on symmetric
induced Ricci tensor and null sectional curvature of this class.
