Payne-Polya-Weinberger type inequalities for eigenvalues of nonelliptic operators.

DOI10.2140/pjm.2003.208.325zbMath1060.35092OpenAlexW1979297563MaRDI QIDQ1880021

Huiqing Zhang, Peng Cheng Niu

Publication date: 16 September 2004

Published in: Pacific Journal of Mathematics (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.2140/pjm.2003.208.325

zbMATH Keywords

Kohn LaplacianBaouendi-Grushin operatorHeisenberg group upper estimates for the gaps of eigenvalues

Mathematics Subject Classification ID

Estimates of eigenvalues in context of PDEs (35P15) Asymptotic distributions of eigenvalues in context of PDEs (35P20) Hypoelliptic equations (35H10)

Related Items (6)

Inequalities and bounds for the eigenvalues of the sub-Laplacian on a strictly pseudoconvex CR manifold ⋮ The first positive eigenvalue of the sub-Laplacian on CR spheres ⋮ Nonlinear degenerate parabolic equations with time-dependent singular potentials for Baouendi-Grushin vector fields ⋮ Universal inequalities for the eigenvalues of a power of the Laplace operator ⋮ Capacity of a condenser in the Heisenberg group ⋮ Universal inequalities for the eigenvalues of Laplace and Schrödinger operators on submanifolds

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