Abstract
We prove that a nearly Kenmotsu manifold is locally isometric to the warped product of a real line and a nearly Kähler manifold. As consequence, a normal nearly Kenmotsu manifold is Kenmotsu. Furthermore, we show that there do not exist nearly Kenmotsu hypersurfaces of nearly Kähler manifolds.
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Erken, I.K., Dacko, P. & Murathan, C. On the Existence of Proper Nearly Kenmotsu Manifolds. Mediterr. J. Math. 13, 4497–4507 (2016). https://doi.org/10.1007/s00009-016-0758-9
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DOI: https://doi.org/10.1007/s00009-016-0758-9