Atceken, MehmetKilic, Erol2024-08-042024-08-0420070386-5991https://doi.org/10.2996/kmj/1193924940https://hdl.handle.net/11616/97680In this paper, we introduce a new class of lightlike submanifolds, namely, semi-invariant lightlike submanifolds of a semi-Riemannian product manifold. We investigate totally umbilical, curvature invariant lightlike submanifolds in real space forms M-1(c(1)) X M-2 (c(2)) and discuss integrabilities of distributions on semi-Riemannian product manifold.eninfo:eu-repo/semantics/openAccesssemi-Riemannian product manifoldreal space formproper semi-invariant lightlike submanifold and locally lightlike productArticle30336137810.2996/kmj/11939249402-s2.0-85010981663N/AWOS:000255191800005N/A