Existence and multiplicity of solutions for a class of elliptic boundary value problems

Existence and multiplicity of solutions for a class of elliptic boundary value problems
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一类椭圆边值问题解的存在性和多重性

DOI:
10.1016/j.jmaa.2013.08.001
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发表时间:
2014-02
影响因子:
1.3
通讯作者:
Zhang Xingyong
Zhang Xingyong
中科院分区:
数学3区
文献类型:
--
作者:
Zhang Xingyong

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研究了一类椭圆边值问题{− Δ u+ a(x)u= g(x,u)in Ω,u= 0 on Ω,其中g(x,u)=− Ku(x,u)+Wu(x,u).当g(x,u)在u中为奇数,K满足pinching条件,W具有超二次增长时,利用对称山路引理得到了无穷多解的两个结果.此外,在不假定g(x,u)为奇的条件下,利用山路定理,我们还得到了一个非平凡弱解的存在性的两个结果.其中一个结果推广了Mao,Zhu and Luan(2012)[10]中的一个结果。
In this paper, we investigate the existence and multiplicity of solutions for the following elliptic boundary value problems {− Δ u+ a (x) u= g (x, u) in Ω, u= 0 on∂ Ω, where g (x, u)=− K u (x, u)+ W u (x, u). By using the symmetric mountain pass theorem, we obtain two results about infinitely many solutions when g (x, u) is odd in u, K satisfies the pinching condition and W has a super-quadratic growth. Moreover, when the condition “g (x, u) is odd” is not assumed, by using the mountain pass theorem, we also obtain two existence results of one nontrivial weak solution. One of these results generalizes a recent result in Mao, Zhu and Luan (2012)[10].
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