On submanifolds of Sasakian manifolds
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- Sarkar, A. Lobachevskii J Math (2011) 32: 88. doi:10.1134/S1995080211010045
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The object of the present paper is to introduce a new type of invariant submanifolds, namely, mixed-invariant submanifolds of Sasakian manifolds and to show that everymixed-invariant submanifold of a Sasakian manifold is totally geodesic. 2-quasi-umbilical hypersurface of a Sasakian space form is also studied.