Conformal-twisted product semi-slant submanifolds in globally conformal Kaehler manifolds
Year 2021,
Volume: 50 Issue: 4, 1028 - 1046, 06.08.2021
Sibel Gerdan Aydın
,
Hakan Mete Taştan
Abstract
We introduce the notion of conformal-twisted product submanifolds of the form $_fM^{T}\times_{b}M^{\theta}$ and $_fM^{\theta}\times_{b}M^{T}$, where $M^T$ is a holomorphic submanifold and $M^\theta$ is a proper slant submanifold of $M$ in a globally conformal Kaehler manifold and $f$ and $b$ are conformal factor and twisting function, respectively. We give necessary and sufficient conditions for proper semi-slant submanifold to be a locally conformal-twisted product for such submanifolds of the form $_fM^{T}\times_{b}M^{\theta}$ and $_fM^{\theta}\times_{b}M^{T}$. We establish a general inequality for the squared norm of second fundamental form of these types of submanifolds.
Supporting Institution
TUBITAK
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a locally product Riemannian manifold, Mathematical Advances in Pure and Applied
Sciences, 1 (1), 23–26, 2018.
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Kaehler manifold, An. Stiint. Univ. Al. I. Cuza Iasi. Mat. (N.S.) Mathematics Tomul
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Year 2021,
Volume: 50 Issue: 4, 1028 - 1046, 06.08.2021
Sibel Gerdan Aydın
,
Hakan Mete Taştan
References
- [1] A. Bejancu, CR-Submanifolds of Kaehler manifold, Proc. Amer. Math. Soc. 69, 135-
142, 1978.
- [2] A. Bejancu , Semi-invariant submanifolds of locally product Riemannian manifolds,
An. Univ. West. Timis. Ser. Mat.-Inform. 22, 1984.
- [3] R.L. Bishop and B. O’Neill, Manifolds of negative curvature, Trans. Amer. Math.
Soc. 1 (145), 1–49, 1969.
- [4] V. Bonanzinga and K. Matsumoto, Twisted product CR-submanifolds in a locally
conformal Kaehler space forms, Filomat, 34 (6), 1915–1925, 2020.
- [5] B.Y. Chen, Geometry of submanifolds and its applications, Science University of
Tokyo, 1981.
- [6] B.Y. Chen, Geometry of slant submanifolds, Katholieke Universiteit, Leuven, Leuven
1990.
- [7] B.Y. Chen, Geometry of warped product CR-submanifolds in Kaehler manifolds,
Monatsh. Math. 133, 177–195, 2001.
- [8] B.Y. Chen, Differential geometry of warped product manifolds and submanifolds,
World Scientific, 2017.
- [9] B.Y. Chen, F. Alghamdi and S. Uddin, Geometry of pointwise semi-slant warped
products in locally conformal Kaehler manifolds, arXiv:2011.03997, 2020.
- [10] S. Dragomir and L. Ornea, Locally conformal Kähler geometry, Progress in Mathematicsi
155, Birkhäuser, Boston Inc: Boston, MA, 1998.
- [11] M. Gutierrez and B. Olea, Semi-Riemannian manifolds with a doubly warped structures,
Rev. Mat. Iberoam. 28 (1), 1–24, 2012.
- [12] M.A. Lone, A lower bound of normalized scalar curvature for the submanifolds of
locally conformal Kaehler space form using Casorati curvatures, Filomat, 31 (15),
4925–4932, 2017.
- [13] K. Matsumoto, Warped product semi-slant submanifolds in locally conformal Kaehler
manifolds, Proc. Int. Geom. Cent. 10 (2), 8–23, 2017.
- [14] K. Matsumoto, Warped product semi-slant submanifolds in locally conformal Kaehler
manifolds II, Proc. Int. Geom. Cent. 11 (3), 27–44, 2018.
- [15] M.I. Munteanu, Doubly warped product CR-submanifolds in locally conformal Kähler
manifolds, Monatsh. Math. 150, 333–342, 2007.
- [16] M.I. Munteanu, A note on doubly warped product contact CR-submanifolds in trans-
Sasakian manifolds, Acta Math. Hungar. 116 (1-2), 121–126, 2007.
- [17] N. Papaghiuc, Semi-slant submanifolds of a Kählerian manifold, An. Stiint. Univ. Al.
I. Cuza Iasi. Mat. (N.S.) 40, 55–61, 1994.
- [18] R. Ponge and H. Reckziegel, Twisted products pseudo- Riemannian geometry, Geom.
Dedicata, 48, 15–25, 1993.
- [19] B. Şahin, Nonexistence of warped product semi-slant submanifolds of Kaehler manifolds,
Geom. Dedicata, 117, 195–202, 2005.
- [20] B. Şahin, Notes on doubly warped and doubly twisted product CR-submanifolds of
Kaehler manifolds, Mat. Vesnik, 59, 205–210, 2007.
- [21] B. Şahin, Warped product semi-slant submanifolds of a locally product Riemannian
manifold, Studia Sci. Math. Hungar. 46 (2), 169–184, 2009.
- [22] H.M. Taştan and S. Gerdan, Doubly twisted product semi-invariant submanifolds of
a locally product Riemannian manifold, Mathematical Advances in Pure and Applied
Sciences, 1 (1), 23–26, 2018.
- [23] H.M. Taştan and M.M. Tripathi, Semi-slant submanifolds of a locally conformal
Kaehler manifold, An. Stiint. Univ. Al. I. Cuza Iasi. Mat. (N.S.) Mathematics Tomul
LXII, 1 (2), 337–347, 2016.
- [24] S. Uddin, On doubly warped and doubly twisted product submanifolds, Int. Electron.
J. Geom. 3 (1), 35–39, 2010.
- [25] B. Ünal, Doubly warped products, Differential Geom. Appl. 15, 253–263, 2001.
- [26] I. Vaisman, On locally and globally conformal Kähler manifolds, Trans. Amer. Math.
Soc. 262 (2), 533–542, 1980.
- [27] G.E. Vilcu, Ruled CR-submanifolds of locally conformal Kähler manifolds, J. Geom.
Phys. 62 (6), 1366–1372, 2012.
- [28] G.E. Vilcu, Horizontally conformal submersions from CR-submanifolds of locally conformal
Kaehler manifolds, Mediterr. J. Math. 17 (26), 2020.
- [29] K. Yano and M. Kon, Structures on Manifolds, World Scientific, Singapore, 1984.