On lightlike submanifolds of a GRW space-time
Commun. Korean Math. Soc. 2014 Vol. 29, No. 2, 295-310
Printed April 1, 2014
Tae Ho Kang
University of Ulsan
Abstract : This paper provides a study of lightlike submanifolds of a generalized Robertson-Walker (GRW) space-time. In particular, we investigate lightlike submanifolds with curvature invariance, parallel second fundamental forms, totally umbilical second fundamental forms, null sectional curvatures and null Ricci curvatures, respectively.
Keywords : lightlike submanifold, spacelike slice, generalized Robertson-Walker space-time, curvature invariance, totally umbilical second fundamental form, null sectional curvature, null Ricci curvature
MSC numbers : 53C25, 53C25
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