Turkish Journal of Mathematics and Computer Science, vol.15, no.1, pp.1-11, 2023 (Peer-Reviewed Journal)
In this paper, we introduce and examine invariant and semi-invariant lightlike submanifolds of a poly-Norden semi-Riemannian manifold. Also, we obtain some examples of such types submanifolds and study the conditions for both integrability and totally geodesic foliation description of distributions.