On the number of radially symmetric solutions to Dirichlet problems with jumping nonlinearities of superlinear order
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- by Alfonso Castro and Hendrik J. Kuiper PDF
- Trans. Amer. Math. Soc. 351 (1999), 1919-1945 Request permission
Abstract:
This paper is concerned with the multiplicity of radially symmetric solutions $u(x)$ to the Dirichlet problem \[ \Delta u+f(u)=h(x)+c\phi (x)\] on the unit ball $\Omega \subset \mathbf R^N$ with boundary condition $u=0$ on $\partial \Omega$. Here $\phi (x)$ is a positive function and $f(u)$ is a function that is superlinear (but of subcritical growth) for large positive $u$, while for large negative $u$ we have that $f’(u)<\mu$, where $\mu$ is the smallest positive eigenvalue for $\Delta \psi +\mu \psi =0$ in $\Omega$ with $\psi =0$ on $\partial \Omega$. It is shown that, given any integer $k\ge 0$, the value $c$ may be chosen so large that there are $2k+1$ solutions with $k$ or less interior nodes. Existence of positive solutions is excluded for large enough values of $c$.References
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Additional Information
- Alfonso Castro
- Affiliation: Department of Mathematics, University of North Texas, Denton, Texas 76203
- Hendrik J. Kuiper
- Affiliation: Department of Mathematics, Arizona State University, Tempe, Arizona 85287–1804
- Received by editor(s): April 24, 1996
- Published electronically: January 26, 1999
- © Copyright 1999 American Mathematical Society
- Journal: Trans. Amer. Math. Soc. 351 (1999), 1919-1945
- MSC (1991): Primary 35J65, 34A10
- DOI: https://doi.org/10.1090/S0002-9947-99-02110-8
- MathSciNet review: 1458318