Abstract
Non-existence of warped product semi-slant submanifolds of Kaehler manifolds was proved in Sahin (Geom Dedic 117:195–202, 2006), it is interesting to find their existence in a more general setting, e.g., nearly Kaehler manifolds. In this paper, we obtain a necessary and sufficient condition for a semi-slant submanifold of a nearly Kaehler manifold to be a locally warped product. Also, we establish an inequality for the squared norm of the second fundamental form in terms of the warping function and the slant angle. Furthermore, the equality case of the statement is also considered.
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Agricola I.: The Srni lectures on non-integrable geometries with torsion. Arch. Math. (Brno) 42, 5–84 (2006)
Al-Luhaibi N.S., Al-Solamy F.R., Khan V.A.: CR-warped product submanifolds of nearly Kaehler manifolds. J. Korean Math. Soc. 46, 979–995 (2009)
Al-Solamy, F.R., Khan,M.A.: Hemi-slant warped product submanifolds of nearly Kaehler manifolds. Abstr. Appl. Anal. 2014 (2014). doi:10.1155/2014/404851 (article ID404851)
Atceken M.: Warped product semi-slant submanifolds in Kenmotsu manifolds. Turk. J. Math. 36, 319–330 (2012)
Bishop R.L., O’Neill B.: Manifolds of negative curvature. Trans. Am. Math. Soc. 145, 1–49 (1969)
Butruille J.B.: Classification des vari’t’s approximativement kähleriennes homog’nes. Ann. Glob. Anal. Geom. 27, 201–225 (2005)
Chen B.-Y.: Slant immersions. Bull. Aust. Math. Soc. 41, 135–147 (1990)
Chen B.-Y.: Geometry of slant submanifolds. Katholieke Universiteit, Leuven (1990)
Chen B.-Y.: Geometry of warped product CR-submanifolds in Kaehler manifolds. Monatsh. Math. 133, 177–195 (2001)
Chen B.-Y.: Geometry of warped product CR-submanifolds in Kaehler manifolds II. Monatsh. Math. 134, 103–119 (2001)
Chen B.-Y.: Pseudo-Riemannian Geometry, \({\delta}\)-Invariants and Applications. World Scientific, Hackensack (2011)
Chen B.-Y.: Geometry of warped product submanifolds: a survey. J. Adv. Math. Stud. 6(2), 1–43 (2013)
Friedrich T., Grunewald R.: On the first eigenvalue of the Dirac operator on 6-dimensional manifolds. Ann. Glob. Anal. Geom. 3, 265–273 (1985)
Gray A.: Nearly Kaehler manifolds. J. Differ. Geom. 4, 283–309 (1970)
Hasegawa I., Mihai I.: Contact CR-warped product submanifolds in Sasakian manifolds. Geom. Dedic. 102, 143–150 (2003)
Hiepko S.: Eine inner kennzeichungder verzerrten produkte. Math. Ann. 241, 209–215 (1979)
Khan V.A., Khan K.A., Uddin S.: Warped product CR-submanifolds of a nearly Kaehler manifold. SUT Math. J. 43, 201–213 (2007)
Khan V.A., Khan K.A.: Generic warped product submanifolds in nearly Kaehler manifolds. Beiträge Algebra Geom. 50, 337–352 (2009)
Papaghiuc N.: Semi-slant submanifolds of Kaehlerian manifold. Ann. St. Univ. Iasi 9, 55–61 (1994)
Sahin B.: Non existence of warped product semi-slant submanifolds of Kaehler manifolds. Geom. Dedic. 117, 195–202 (2006)
Sahin B., Gunes R.: CR-warped product submanifolds of nearly Kaehler manifolds. Beiträge Algebra Geom. 49, 383–397 (2008)
Sahin B.: Warped product submanifolds of Kaehler manifolds with a slant factor. Ann. Pol. Math. 95, 207–226 (2009)
Sahin B.: Warped product pointwise semi-slant submanifold of Kaehler manifold. Port. Math. 70(3), 251–268 (2013)
Tachibana S.: On almost-analytic vectors in certain almost Hermitian manifolds. Tohoku Math. J. 11, 351–363 (1959)
Uddin S., Chi A.Y.M.: Warped product pseudo-slant submanifolds of nearly Kaehler manifolds. An. St. Univ. Ovidius Constanta 19(3), 195–204 (2011)
Uddin, S., Al-Solamy, F.R., Khan, K.A.: Geometry of warped product pseudo-slant submanifolds in nearly Kaehler manifolds. An. Stiint.Univ. Al. I. Cuza Iasi Sect. I a Mat. (N.S.), Tom LXII 3, 223–234 (2016)
Wolf J.A., Gray A.: Homogeneous spaces defined by Lie group automorphisms I. J. Differ. Geom. 2, 77–114 (1968)
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Al-Solamy, F.R., Khan, V.A. & Uddin, S. Geometry of Warped Product Semi-Slant Submanifolds of Nearly Kaehler Manifolds. Results Math 71, 783–799 (2017). https://doi.org/10.1007/s00025-016-0581-4
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DOI: https://doi.org/10.1007/s00025-016-0581-4