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Asymptotic expansion of solutions to nonlinear elliptic eigenvalue problems
Authors:Tetsutaro Shibata
Affiliation:Department of Applied Mathematics, Graduate School of Engineering, Hiroshima University, Higashi-Hiroshima, 739-8527, Japan
Abstract:We consider the nonlinear eigenvalue problem

begin{displaymath}-Delta u + g(u) = lambda sin u enskip mbox{in} enskip ... ..., enskip u = 0 enskip mbox{on} enskip partial Omega, end{displaymath}

where $Omega subset {mathbf{R}}^N (N ge 2)$ is an appropriately smooth bounded domain and $lambda > 0$ is a parameter. It is known that if $lambda gg 1$, then the corresponding solution $u_lambda$ is almost flat and almost equal to $pi$ inside $Omega$. We establish an asymptotic expansion of $u_lambda(x) enskip (x in Omega)$ when $lambda gg 1$, which is explicitly represented by $g$.

Keywords:Asymptotic expansion   nonlinear elliptic eigenvalue problems
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