On Spectrum of the Laplacian in a Circle Perforated along the Boundary: Application to a Friedrichs-Type Inequality

G. A. Chechkin, Yu. O. Koroleva, L.-E. Persson and P. Wall

International Journal of Differential Equations, 2011, vol. 2011, 1-22

Abstract:

In this paper, we construct and verify the asymptotic expansion for the spectrum of a boundary-value problem in a unit circle periodically perforated along the boundary. It is assumed that the size of perforation and the distance to the boundary of the circle are of the same smallness. As an application of the obtained results, the asymptotic behavior of the best constant in a Friedrichs-type inequality is investigated.

Date: 2011
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Persistent link: https://EconPapers.repec.org/RePEc:hin:jnijde:619623

DOI: 10.1155/2011/619623

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