Inequalities for Eigenvalues of the Sub-Laplacian on Strictly Pseudoconvex CR Manifolds

The sub-Laplacian plays a key role in CR geometry. In this paper, we investigate eigenvalues of the sub-Laplacian on bounded domains of strictly pseudoconvex CR manifolds, strictly pseudoconvex CR manifolds submersed in Riemannian manifolds. We establish some Levitin–Parnovski-type inequalities and...

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Veröffentlicht in:	Mathematical Notes 2021-05, Vol.109 (5-6), p.735-747
1. Verfasser:	Sun, He-Jun
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description	The sub-Laplacian plays a key role in CR geometry. In this paper, we investigate eigenvalues of the sub-Laplacian on bounded domains of strictly pseudoconvex CR manifolds, strictly pseudoconvex CR manifolds submersed in Riemannian manifolds. We establish some Levitin–Parnovski-type inequalities and Cheng–Huang–Wei-type inequalities for their eigenvalues. As their applications, we derive some results for the standard CR sphere in , the Heisenberg group , a strictly pseudoconvex CR manifold submersed in a minimal submanifold in , domains of the standard sphere and the projective space .
doi_str_mv	10.1134/S0001434621050072
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title	Inequalities for Eigenvalues of the Sub-Laplacian on Strictly Pseudoconvex CR Manifolds
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