Eigenvalues estimate for the Neumann problem on bounded domains

Details Eigenvalues estimate for the Neumann problem on bounded domains Eigenvalues estimate for the Neumann problem on bounded domains

2008-02-20

arxiv.org/abs/0802.2774v1

Mathematics

Differential Geometry

9 pages, submitted december 2007

Scientific paper

In this note, we investigate upper bounds of the Neumann eigenvalue problem for the Laplacian of a bounded domain (with smooth boundary) in a given complete (not compact a priori) Riemannian manifold with Ricci bounded below . For this, we use test functions for the Rayleigh quotient subordinated to a family of open sets constructed in a general metric way, interesting for itself. As application, we get upper bounds for the Neumann spectrum which is clearly in agreement with the Weyl law and which is analogous to Buser's upper bounds of the spectrum of a closed Riemannian manifold with lower bound on the Ricci curvature.

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