Geodesic
On the asymptotic behavior of eigenvalues of the boundary value problem with a parameter
Vestnik Samarskogo universiteta. Estestvennonaučnaâ seriâ, no. 6 (2015), pp. 135-140

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The paper presents the investigation of an eigenvalue problem for the Laplace operator with Robin boundary condition in a bounded domain with smooth boundary. The case of boundary condition containing a real parameter is considered. It is proved that multiplicity of the eigenvalue to the Robin problem for all values of the parameter greater than some number does not exceed the multiplicity of the corresponding eigenvalue to the Dirichlet problem for the Laplace operator. For simple eigenvalue of the Dirichlet problem the convergence of eigenfunction of the Robin problem to the eigenfunction of the Dirichlet problem for unlimited increase of the parameter is proved. The formula for derivative on the parameter for eigenvalues of the Robin problem is established. This formula is used to justify the asymptotic expansions of eigenvalues of the Robin problem for large positive values of the parameter.
Keywords: boundary value problem, boundary condition, parameter, eigenvalues, asymptotic expansions. 
@article{VSGU_2015_6_a18,
     author = {A. V. Filinovskiy},
     title = {On the asymptotic behavior of eigenvalues of the boundary value problem with a parameter},
     journal = {Vestnik Samarskogo universiteta. Estestvennonau\v{c}na\^a seri\^a},
     pages = {135--140},
     publisher = {mathdoc},
     number = {6},
     year = {2015},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VSGU_2015_6_a18/}
}
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A. V. Filinovskiy. On the asymptotic behavior of eigenvalues of the boundary value problem with a parameter. Vestnik Samarskogo universiteta. Estestvennonaučnaâ seriâ, no. 6 (2015), pp. 135-140. http://geodesic.mathdoc.fr/item/VSGU_2015_6_a18/