Farkas, C., Kajántó, S. & Kristály, A. (In press) Communications in Contemporary Mathematics [Matematică, Q1]

Publicat: 19 Aprilie 2024

Farkas, C., Kajántó, S. & Kristály, A. (In press) Sharp spectral gap estimates for higher-order operators on Cartan-Hadamard manifolds. Communications in Contemporary Mathematics.

DOI: https://doi.org/10.1142/S0219199724500135

✓ Publisher: World Scientific Publications
✓ Categories: Mathematics; Mathematics, Applied
✓ Article Influence Score (AIS): 1.092 (2023) / Q1 in all categories

Abstract: The goal of this paper is to provide sharp spectral gap estimates for problems involving higher-order operators (including both the clamped and buckling plate problems) on Cartan–Hadamard manifolds. The proofs are symmetrization-free — thus no sharp isoperimetric inequality is needed — based on two general, yet elementary functional inequalities. The spectral gap estimate for clamped plates solves a sharp asymptotic problem from [Q.-M. Cheng and H. Yang, Universal inequalities for eigenvalues of a clamped plate problem on a hyperbolic space, Proc. Amer. Math. Soc.139(2) (2011) 461–471] concerning the behavior of higher-order eigenvalues on hyperbolic spaces, and answers a question raised in [A. Kristály, Fundamental tones of clamped plates in nonpositively curved spaces, Adv. Math.367(39) (2020) 107113] on the validity of such sharp estimates in high-dimensional Cartan–Hadamard manifolds. As a byproduct of the general functional inequalities, various Rellich inequalities are established in the same geometric setting.

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