By Krishan L. Duggal, Bayram Sahin
This is often the 1st systematic account of the most ends up in the speculation of lightlike submanifolds of semi-Riemannian manifolds that have a geometrical constitution, equivalent to nearly Hermitian, nearly touch metric or quaternion K?hler. utilizing those buildings, the booklet offers attention-grabbing sessions of submanifolds whose geometry is particularly wealthy. The publication additionally comprises hypersurfaces of semi-Riemannian manifolds, their use commonly relativity and Osserman geometry, half-lightlike submanifolds of semi-Riemannian manifolds, lightlike submersions, display conformal submersions, and their purposes in harmonic maps. easy buildings and definitions are provided as initial history in each bankruptcy. The presentation explores functions and indicates a number of open questions. This self-contained monograph presents updated learn in lightlike geometry and is meant for graduate scholars and researchers simply getting into this box.