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A generalized Wintgen inequality in quaternion Kähler geometry. (English) Zbl 07910083

Summary: In this paper, we establish a generalized Wintgen inequality for quaternionic bi-slant submanifolds and QR-submanifolds (with minimal codimension) in quaternion space forms. We also aim to characterize the second fundamental form of those submanifolds for which the equality cases can hold. Finally, we provide examples of submanifolds embedded in quaternion space forms to support our results.

MSC:

34B10 Nonlocal and multipoint boundary value problems for ordinary differential equations
34B15 Nonlinear boundary value problems for ordinary differential equations
Full Text: DOI

References:

[1] Lotta, A., Slant submanifolds in contact geometry, Bull. Math. Soc. Sci. Math. Roumanie39 (1996) 183-198. · Zbl 0885.53058
[2] Alvarez-Gaume, L. and Freedman, D. Z., Geometrical structure and ultraviolet finiteness in the supersymmetric \(\sigma \)-model, Comm. Math. Phys.80 (1981) 443.
[3] Amari, S., Differential Geometrical Methods in Statistics, , Vol. 28 (Springer, New York, NY, USA, 1985). · Zbl 0559.62001
[4] Alodan, H., Chen, B.-Y., Deshmukh, S. and Vilcu, G. E., A generalized Wintgen inequality for quaternionic CR-submanifolds, RACSAM Rev. R. Acad. Cienc. Exactas Fís. Nat. Ser. A Mat.114 (2020) 129. · Zbl 1439.53054
[5] Aslam, M. and Siddiqui, A. N., Bounds for generalized normalized \(\delta \)-Casorati curvature for submanifold in real space forms endowed with a quarter-symmetric connection, Balkan J. Geom. Appl.27(2) (2022) 1-12. · Zbl 1498.53018
[6] Bagger, J. and Witten, E., Matter couplings in \(N=2\) supergravity, Nuclear Phys. B202 (1982) 1.
[7] F. Boso and D. M. Tartakovski, Information-geometry of physics-informed statistical manifolds and its use in data assimilation, preprint (2021), arXiv:2103.01160v1.
[8] Barros, M., Chen, B. Y. and Urbano, F., Quaternion CR-submanifolds of quaternion manifolds, Kodai Math. J.4(3) (1981) 339-417. · Zbl 0481.53046
[9] Barros, M. and Urbano, F., Totally real submanifolds of quaternion Kaehlerian manifolds, Soochow J. Math.5 (1979) 63-78. · Zbl 0433.53024
[10] Bejancu, A., QR-submanifolds of quaternion Kaehler manifolds, Chin. J. Math.14 (1986) 81-94. · Zbl 0602.53037
[11] Berndt, J., Real hypersurfaces in quaternionic space space forms, J. Reine Angew. Math.419 (1991) 9-26. · Zbl 0718.53017
[12] Blair, D., Quasi-umbilical, minimal submanifolds of Euclidean space, Simon Stevin51 (1977) 3-22. · Zbl 0369.53023
[13] Casorati, F., Nuova definizione della curvatura delle superficie e suo confronto con quella di Gauss (New definition of the curvature of the surface and its comparison with that of Gauss), Rend. Inst. Matem. Accad. Lomb. Ser. II22(8) (1889) 335-346. · JFM 21.0749.02
[14] Chen, B. Y., Recent developments in \(\delta \)-Casorati curvature invariants, Turkish J. Math.45 (2021) 1-46. · Zbl 1505.53002
[15] Chen, B. Y., Recent developments in Wintgen inequality and Wintgen ideal submanifolds, Int. Electron. J. Geom.20 (2021) 6-45. · Zbl 1471.53006
[16] Chen, B. Y., Pseudo-Riemannian Geometry, \( \delta \)-Invariants and Applications, (World Scientific, Hackensack, NJ, USA, 2011). · Zbl 1245.53001
[17] Cabrerizo, J. L., Carriazo, A. and Fernandez, L. M., Slant submanifolds in Sasakian manifolds, Glasgow Math. J.42(1) (2000) 125-138. · Zbl 0957.53022
[18] Cabrerizo, J. L., Carriazo, A., Fernandez, L. M. and Fernandez, M., Semi-slant submanifolds of a Sasakian manifold, Geom. Dedicata78 (1999) 183-199. · Zbl 0944.53028
[19] B. Y. Chen, Geometry of slant submanifolds, Katholieke Universiteit Leuven (1990). · Zbl 0716.53006
[20] De Smet, P. J., Dillen, F., Verstraelen, L. and Vrancken, L., A pointwise inequality in submanifold theory, Arch. Math. (Brno)35(2) (1999) 115-128. · Zbl 1054.53075
[21] Ge, J. and Tang, Z., A proof of the DDVV conjecture and its equality case, Pacific J. Math.237(1) (2009) 87-95. · Zbl 1163.53038
[22] Guadalupe, I. V. and Rodriguez, L., Normal curvature of surfaces in space forms, Pacific J. Math.106 (1983) 95-103. · Zbl 0515.53044
[23] Ishihara, S., Quaternion Kahlerian manifolds, J. Differential Geom.9 (1974) 483-500. · Zbl 0297.53014
[24] Lee, C. W., Lee, J. W. and Vilcu, G. E., Optimal inequalities for the normalized \(\delta \)-Casorati curvatures of submanifolds in Kenmotsu space forms, Adv. Geom.17 (2017) 355-362, https://doi.org/10.1515/advgeom-2017-0008. · Zbl 1430.53065
[25] Lee, J. W. and Vilcu, G. E., Inequalities for generalized normalized \(\delta \)-Casorati curvatures of slant submanifolds in quaternion space forms, Taiwanese J. Math.19 (2015) 691-702. · Zbl 1357.53068
[26] Lu, Z., Normal scalar curvature conjecture and its applications, J. Funct. Anal.261 (2011) 1284-1308. · Zbl 1233.53008
[27] Macsim, G. and Mihai, A., A \(\delta \)-invariant for QR-submanifolds in quaternion space forms, Int. Electron. J. Geom.11(2) (2018) 8-17. · Zbl 1433.53087
[28] Macsim, G. and Ghisoiu, V., Generalized Wintgen inequality for Lagrangian submanifolds in quaternionic space forms, Math. Inequal. Appl.22(3) (2019) 803-813. · Zbl 1428.53068
[29] Mihai, I., On the generalized Wintgen inequality for Lagrangian submanifolds in complex space forms, Nonlinear Anal.95 (2014) 714-720. · Zbl 1295.53055
[30] Mihai, I., On the generalized Wintgen inequality for Legendrian submanifolds in Sasakian space forms, Tohoku Math. J.69(1) (2017) 43-53. · Zbl 1367.53050
[31] Mihai, I., Al-Solamy, F. and Shahid, M. H., On Ricci curvature of a quaternion CR-submanifolds in a quaternion space form, Rad. Math.12(1) (2003) 91-98. · Zbl 1090.53053
[32] Mishra, K. V. and Kumar, M. A., Generalized Bayesian Cramér-Rao inequality via information geometry of relative \(\alpha \)-entropy, Proc. 2020 54th Annual Conf. Information Sciences and Systems (CISS), 18-20 March 2020, Princeton, NJ, USA, pp. 1-6.
[33] Pessoa, P., Costa, F. X. and Caticha, A., Entropic dynamics on Gibbs statistical manifolds, Entropy23 (2021) 494.
[34] Papaghiuc, N., Semi-slant submanifolds of a Kaehlerian manifold, An. Stiint. Univ. Al. I. Cuza Iasi. Mat.40(1) (1994) 55-61. · Zbl 0847.53012
[35] Sahin, B., Slant submanifolds of quaternion Kaehler manifolds, Commun. Korean Math. Soc.22(1) (2007) 123-135. · Zbl 1168.53313
[36] Siddiqui, A. N., Siddiqi, M. D. and Shahid, M. H., Optimization on submanifolds of \(\delta \)-Lorentzian trans-Sasakian manifolds with Casorati curvatures, Tamkang J. Math.53(4) (2022) 385-406. · Zbl 1510.53030
[37] Siddiqi, M. D., Siddiqui, A. N. and Bahadir, O., Generalized Wintgen inequalities for submanifolds of trans-Sasakian space form, Matimyas Mat.44(1) (2021) 1-14.
[38] Siddiqui, A. N. and Shahid, M. H., On totally real statistical submanifolds, Filomat32(13) (2018) 4473-4483. · Zbl 1499.53170
[39] Siddiqui, A. N. and Ahmad, K., Generalized Wintgen inequality for totally real submanifolds in (LCS)\({}_n\)-manifolds, Balkan J. Geom. Appl.24(2) (2019) 53-62. · Zbl 1457.53042
[40] Siddiqui, A. N., Optimal Casorati inequalities on bi-slant submanifolds of generalized Sasakian space forms, Tamkang J. Math.49(3) (2018) 245-255. · Zbl 1406.53064
[41] Siddiqui, A. N., Alkhaldi, A. H. and Alqahtani, L. S., Generalized Wintgen inequality for statistical submanifolds in Hessian manifolds of constant Hessian curvature, Mathematics10(10) (2022) 1727.
[42] Siddiqi, M. D., Siddiqui, A. N., Hakami, A. H. and Hasan, M, Estimation of sharp geometric inequality in \(D_\alpha \)-homothetically deformed Kenmotsu manifolds, Cubo (Temuco)25(3) (2023) 349-361. · Zbl 07788519
[43] Siddiqi, M. D. and Hakami, A. H., Optimal inequalities on \((\alpha,\beta)\)-type almost contact manifold with the Schouten-Van Kampen connection, Axioms12(12) (2023) 1082.
[44] Vilcu, A. D. and Vilcu, G. E., Statistical manifolds with almost quaternionic structures and quaternionic Kahler-like statistical submersions, Entophy17(9) (2015) 6213-6228. · Zbl 1338.53056
[45] Wintgen, P., Sur l’inégalité de Chen-Willmore, C. R. Acad. Sci. Paris288 (1979) 993-995. · Zbl 0421.53003
[46] Yano, K. and Kon, M., Structures on Manifolds (Worlds Scientific, Singapore, 1984). · Zbl 0557.53001
[47] Yoon, D. W., A basic inequality of submanifolds in quaternion space forms, Balkan J. Geom. Appl.9(2) (2004) 92-103. · Zbl 1073.53027
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