Abstract
In this paper, we establish a sharp inequality for the squared norm of the second fundamental form of bi-warped product submanifolds of Kenmotsu manifolds. The equality case is also considered. We also provide a non-trivial example and some applications of derived inequality.
Similar content being viewed by others
References
Al-Solamy, F.R., Naghi, M.F., Uddin, S.: Geometry of warped product pseudo-slant submanifolds of Kenmotsu manifolds. Quaestiones Math. (2018). https://doi.org/10.2989/16073606.2018.1452800
Arslan, K., Ezentas, R., Mihai, I., Murathan, C.: Contact CR-warped product submanifolds in Kenmotsu space forms. J. Korean Math. Soc. 42, 1101–1110 (2005)
Atceken, M.: Warped product semi-slant submanifolds in Kenmotsu manifolds. Turk. J. Math. 36, 319–330 (2012)
Baker, J.P.: Twice warped products M.Sc. Thesis. Univesity of Missouri-Columbia, Columbia, MO (1997)
Bishop, R.L., O’Neill, B.: Manifolds of negative curvature. Trans. Amer. Math. Soc. 145, 1–49 (1969)
Blair, D.E.: Contact manifolds in Riemannian geometry, Lecture Notesin Mathematics, vol. 509. Springer, New York (1976)
Cabrerizo, J.L., Carriazo, A., Fernandez, L.M., Fernandez, M.: Slant submanifolds in Sasakian manifolds. Glasgow Math. J. 42, 125–138 (2000)
Chen, B.-Y.: Slant immersions. Bull. Austral. Math. Soc. 41, 135–147 (1990)
Chen, B.-Y.: Geometry of slant submanifolds. Katholieke Universiteit Leuven, 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)
Chen, B.-Y.: Differential geometry of warped product manifolds and submanifolds. World Scientific, Hackensack (2017)
Chen, B.-Y., Dillen, F.: Optimal inequalities for multiply warped product submanifolds. Int. Electron. J. Geom. 1(1), 1–11 (2008)
Chen, B.-Y., Uddin, S.: Warped product pointwise bi-slant submanifolds of Kaehler manifolds. Publ. Math. Debrecen 92(1–2), 183–199 (2018)
Chen, B.-Y.: Geometry of warped product and CR-warped product submanifolds in Kaehler manifolds: modified version, arXiv:1806.11102v1 [math.DG]
Dobarro, F., Unal, B.: Curvature of multiply warped products. J. Geom. Phys. 55, 75–106 (2005)
Hasegawa, I., Mihai, I.: Contact CR-warped product submanifolds in Sasakian manifolds. Geom. Dedicata 102, 143–150 (2003)
Kenmotsu, K.: A class of almost contact Riemannian manifolds. Tohoku Math. J. 24, 93–103 (1972)
Matsumoto, K., Mihai, I.: Warped product submanifolds in quaternion space forms. Acta Univ. Apulensis Math. Inform. 10, 31–38 (2005)
Matsumoto, K., Mihai, I.: Warped product submanifolds in Sasakian space forms. SUT J. Math. 38(2), 135–144 (2002)
Murathan, C., Arslan, K., Ezentas, R., Mihai, I.: Warped product submanifolds in Kenmotsu space forms. Taiwanese J. Math. 10(6), 1431–1441 (2006)
Mustafa, A., De, A., Uddin, S.: Characterization of warped product submanifolds in Kenmotsu manifolds. Balkan J. Geom. Appl. 20, 86–97 (2015)
Nolker, S.: Isometric immersions of warped products. Differ. Geom. Appl. 6(1), 1–30 (1996)
Olteanu, A.: Multiply warped product submanifolds in Kenmotsu space forms. Bull. Inst. Math. Acad. Sinica 5(2), 201–214 (2010). (New Series)
Tastan, H.M.: Biwarped product submanifolds of a Kaehler manifold, arXiv:1611.08469 [math.DG]
Uddin, S., Khan, V.A., Khan, K.A.: Warped product submanifolds of a Kenmotsu manifold. Turk. J. Math. 36, 319–330 (2012)
Uddin, S.: Geometry of warped product semi-slant submanifolds of Kenmotsu manifolds. Bull. Math. Sci. (2017). https://doi.org/10.1007/s13373-017-0106-9
Uddin, S., Chen, B.-Y., Al-Solamy, F.R.: Warped product bi-slant immersions in Kaehler manifolds. Mediterr. J. Math. 14, 95 (2017). https://doi.org/10.1007/s00009-017-0896-8
Uddin, S., Al-Solamy, F.R.: Warped product pseudo-slant immersions in Sasakian manifolds. Publ. Math. Debrecen 91(3–4), 331–348 (2017)
Uddin, S., Naghi, M.F., Al-Solamy, F.R.: Another class of warped product submanifoldsof Kenmotsu manifolds. RACSAM (2017). https://doi.org/10.1007/s13398-017-0415-6
Unal, B.: Multiply warped products. J. Geom. Phys. 34(3), 287–301 (2000)
Yano, K., Kon, M.: Structures on manifolds, Series in Pure Mathematics. World Scientific Publishing Co., Singapore (1984)
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Uddin, S., Al-Solamy, F.R., Shahid, M.H. et al. B.-Y. Chen’s Inequality for Bi-warped Products and Its Applications in Kenmotsu manifolds. Mediterr. J. Math. 15, 193 (2018). https://doi.org/10.1007/s00009-018-1238-1
Received:
Revised:
Accepted:
Published:
DOI: https://doi.org/10.1007/s00009-018-1238-1