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PERTURBATIONS FROM INDEFINITE SYMMETRIC ELLIPTIC BOUNDARY VALUE PROBLEMS

Published online by Cambridge University Press:  08 February 2017

LIANG ZHANG
Affiliation:
School of Mathematical Sciences, University of Jinan, Jinan, Shandong 250022, P.R. China e-mail: mathspaper2012@126.com
XIANHUA TANG
Affiliation:
School of Mathematics and Statistics, Central South University, Changsha, Hunan 410083, P.R. China
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Abstract

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In this paper, we study the multiplicity of solutions for the following problem:

$$\begin{equation*}\begin{cases}-\Delta u-\Delta(|u|^{\alpha})|u|^{\alpha-2}u=g(x,u)+\theta h(x,u), \ \ x\in \Omega,\\u=0, \ \ x\in \partial\Omega,\end{cases}\end{equation*}$$
where α ≥ 2, Ω is a smooth bounded domain in ${\mathbb{R}}$ N , θ is a parameter and g, h ∈ C( $\bar{\Omega}$ × ${\mathbb{R}}$ ). Under the assumptions that g(x, u) is odd and locally superlinear at infinity in u, we prove that for any j ∈ $\mathbb{N}$ there exists ϵj > 0 such that if |θ| ≤ ϵj , the above problem possesses at least j distinct solutions. Our results generalize some known results in the literature and are new even in the symmetric situation.

Information

Type
Research Article
Copyright
Copyright © Glasgow Mathematical Journal Trust 2017