
The author studies the geometry of light-like hypersurfaces \(M\) of an indefinite cosymplectic manifold \(\overline M\) such that either (1) the characteristic vector field \(\zeta\) of \(\overline M\) belongs to the screen distribution \(S\) of \(M\) or (2) \(\zeta\) belongs to the orthogonal complement \(S^{\perp}\) of \(S\) in \(T\overline M\).
Global differential geometry of Lorentz manifolds, manifolds with indefinite metrics, tangential and ascreen light-like hypersurfaces, Special Riemannian manifolds (Einstein, Sasakian, etc.), indefinite cosymplectic manifold, Global submanifolds, screen conformal, totally umbilical
Global differential geometry of Lorentz manifolds, manifolds with indefinite metrics, tangential and ascreen light-like hypersurfaces, Special Riemannian manifolds (Einstein, Sasakian, etc.), indefinite cosymplectic manifold, Global submanifolds, screen conformal, totally umbilical
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