14-19 Pavel Exner, Alexander Minakov, and Leonid Parnovski
Asymptotic eigenvalue estimates for a Robin problem with a large parameter (195K, pdf) Apr 3, 14
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Abstract. Robin problem for the Laplacian in a bounded planar domain with a smooth boundary and a large parameter in the boundary condition is considered. We prove a two-sided three-term asymptotic estimate for the negative eigenvalues. Furthermore, improving the upper bound we get a two term asymptotics in terms of the coupling constant and the maximum of the boundary curvature.

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