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arXiv 1607.01150math.AP
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变号奇异非线性分数阶Laplace系统的多重性结果

Multiplicity results of fractional-Laplace system with sign-changing and singular nonlinearity

Sarika Goyal

摘要:

本文研究了具有奇异非线性项的分数阶Laplacian系统\begin{equation*} (P_{λ,μ}) \left\{ \begin{array}{lr} (-Δ)^s u = λf(x) u^{-q}+ \fracα{α+β}b(x) u^{α-1} w^β\; \text{in}\;Ω\\ (-Δ)^s w = μg(x) w^{-q}+ \fracβ{α+β} b(x) u^α w^{β-1}\; \text{in}\;Ω\\ \quad \quad u, w>0\;\text{in}\;Ω, \quad u = w = 0 \; \mbox{in}\; \mathbb{R}^n \setminusΩ, \end{array} \quad \right. \end{equation*},其中$Ω$是$\mathbb{R}^n$中的有界区域,具有光滑边界$\partial Ω$,$n>2s$,$s\in(0,1)$,$0<q<1$,$α>1$,$β>1$满足$2<α+β< 2_{s}^*-1$,$2_{s}^*=\frac{2n}{n-2s}$,参数对$(λ,μ) \in \mathbb{R}^2\setminus\{(0,0)\}$ .权重函数$f,g: Ω\subset\mathbb{R}^n \to \mathbb{R}$使得$0<f$、$g\in L^{\frac{α+β}{α+β-1+q}}(Ω)$和$b:Ω\subset \mathbb{R}^n \to \mathbb{R}$是符号改变函数使得$b(x)\in L^{\infty}(Ω)$。利用变分方法,我们证明了$(P_{λ,μ})$关于参数$(λ,μ)$的正解的存在性和多重性。

英文摘要:

In this article, we study the following fractional-Laplacian system with singular nonlinearity \begin{equation*} (P_{λ,μ}) \left\{ \begin{array}{lr} (-Δ)^s u = λf(x) u^{-q}+ \fracα{α+β}b(x) u^{α-1} w^β\; \text{in}\;Ω\\ (-Δ)^s w = μg(x) w^{-q}+ \fracβ{α+β} b(x) u^α w^{β-1}\; \text{in}\;Ω\\ \quad \quad u, w>0\;\text{in}\;Ω, \quad u = w = 0 \; \mbox{in}\; \mathbb{R}^n \setminusΩ, \end{array} \quad \right. \end{equation*} where $Ω$ is a bounded domain in $\mathbb{R}^n$ with smooth boundary $\partial Ω$, $n>2s$, $s\in(0,1)$, $0<q<1$, $α>1$, $β>1$ satisfy $2<α+β< 2_{s}^*-1$ with $2_{s}^*=\frac{2n}{n-2s}$, the pair of parameters $(λ,μ) \in \mathbb{R}^2\setminus\{(0,0)\}$. The weight functions $f,g: Ω\subset\mathbb{R}^n \to \mathbb{R}$ such that $0<f$, $g\in L^{\frac{α+β}{α+β-1+q}}(Ω)$, and $b:Ω\subset \mathbb{R}^n \to \mathbb{R}$ is a sign-changing function such that $b(x)\in L^{\infty}(Ω)$. Using variational methods, we show existence and multiplicity of positive solutions of $(P_{λ,μ})$ with respect to the pair of parameters $(λ,μ)$.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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