Riemannian Maps Satisfying DDVV-Type Inequality

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Kirti Gupta
Punam Gupta
R.K. Gangele

Abstract

This paper establishes DDVV-type curvature inequalities for Riemannian maps into generalized complex space forms. Using the Gauss and Ricci equations, we relate intrinsic curvature invariants of the domain manifold to extrinsic invariants of the map and discuss the equality cases. The results extend known curvature inequalities from submanifold theory to the setting of Riemannian maps.

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1.
Riemannian Maps Satisfying DDVV-Type Inequality. J. Int. Acad. Phys. Sci. [Internet]. 2026 Jun. 15 [cited 2026 Oct. 23];30(2):71-80. Available from: http://www.iaps.org.in/journal/index.php/journaliaps/article/view/1039

References

1. P. Wintgen; Sur l’in´egalit´e de Chen–Willmore, C. R. Acad. Sci. Paris, Ser. A, 288 (1979), 993-995.

2. I. V. Guadalupe and L. Rodriguez; Normal curvature of surfaces in space forms, Pacific J. Math, 106 (1983), 95-103.

3. P. J. De Smet, F. Dillen, L. C. A. Verstraelen and L. Vrancken; A pointwise inequality in submanifold theory, Arch. Math. 35 (1999), 115-128.

4. Z. Lu; Normal scalar curvature conjecture and its applications, J. Funct. Anal., 261-5 (2011), 1284-1308.

5. J. Ge and Z. Tang; A proof of the DDVV conjecture and its equality case, Pacific J. Math, 237-1 (2008), 87-95.

6. J. Ge, DDVV-type inequality for skew-symmetric matrices and Simons-type inequality for Riemannian submersions, Adv. Math, 251 (2014), 62-86.

7. A. E. Fischer; Riemannian maps between Riemannian manifolds. Mathematical Aspects of Classical Field Theory (Seattle, WA, 1991), Contemp. Math., Amer. Math. Soc., Providence, 132 (1992), 331-366.

8. Z. Olszak; On the existence of generalized complex space forms, Israel J. Math., 65-2 (1989), 214-218.

9. R. Singh, K. Meena and K. C. Meena; General Casorati inequalities and implications for Riemannian maps and Riemannian submersions, J. Math. Anal. Appl., 558-1 (2026), 130436.

10. F. Tricerri and L. Vanhecke; Curvature tensors on almost Hermitian manifolds, Trans. Amer. Math. Soc., 267-2 (1981), 365-398.

11. K. Yano and M. Kon; Structures on Manifolds, World Scientific, Singapore, 1984.

12. L. Vanhecke; Almost Hermitian manifolds with J-invariant Riemannian curvature tensor, Rend. Semin. Mat. Univ. Politec. Torino, 34 (1975-1976), 487-498.

13. B. Sahin; Riemannian Submersions, Riemannian Maps in Hermitian Geometry and Their Applications, Elsevier Academic Press, Cambridge, 2017.

14. J. W. Lee, C. W. Lee, B. Sahin and G. E. Vilcu; Chen–Ricci inequalities for Riemannian maps and their applications, Contemp. Math., 777 (2022), 137-152.

15. M. Gulbahar, S. E. Meric and E. Kilic; Sharp inequalities involving the Ricci curvature for Riemannian submersions, Kragujevac J. Math, 41 (2017), no. 2, 279-293.

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