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arXiv 2212.09261math.AP
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由奇异性、Choquard型项和间断幂非线性项驱动的临界变指数混合阶椭圆问题

Mixed order elliptic problems driven by a singularity, a Choquard type term and a discontinuous power nonlinearity with critical variable exponents

Jiabin Zuo, Debajyoti Choudhuri, Dušan D. Repovš

摘要:

证明了具有变阶分数Laplacian和变奇异指数\begin{align*} \begin{split} a(-Δ)^{s(\cdot)}u+b(-Δ)u&=λ|u|^{-γ(x)-1}u+\left(\int_Ω\frac{F(y,u(y))}{|x-y|^{μ(x,y)}}dy\right)f(x,u) & +ηH(u-α)|u|^{r(x)-2}u,~\text{in}~Ω, u&=0,~\text{in}~\mathbb{R}^N\setminusΩ. \end{split} \end{align*}的临界Choquard型问题解的存在性,其中$a(-Δ)^{s(\cdot)}+b(-Δ)$是具有变阶$s(\cdot):\mathbb{R}^{2N}\rightarrow (0,1)$的混合算子,$a, b\geq 0$具有$a+b>0$,$H$是Heaviside函数(即,如果$t\leq0$,$H(t) = 1$如果$t>0),$,$Ω\subset\mathbb{R}^N$是有界域,$N\geq 2$,$λ>0$,$0<γ^{-}=\underset{x\in\barΩ}{\inf}\{γ(x)\}\leqγ(x)\leqγ^+=\underset{x\in\barΩ}{\sup}\{γ(x)\}<1$,$μ$是连续变量参数,$F$是适当的$f$的原函数。对于某些$x\in\barΩ,$,可变指数$r(x)$可以等于临界指数$2_{s}^*(x)=\frac{2N}{N-2\bar{s}(x)}$,其中$\bar{s}(x)=s(x,x)$,并且$η$是正参数。我们还表明,作为$α\rightarrow 0^+$,相应的解决方案收敛到上述问题的解决方案与$α=0$。

英文摘要:

We prove the existence of solutions for the following critical Choquard type problem with a variable-order fractional Laplacian and a variable singular exponent \begin{align*} \begin{split} a(-Δ)^{s(\cdot)}u+b(-Δ)u&=λ|u|^{-γ(x)-1}u+\left(\int_Ω\frac{F(y,u(y))}{|x-y|^{μ(x,y)}}dy\right)f(x,u) & +ηH(u-α)|u|^{r(x)-2}u,~\text{in}~Ω, u&=0,~\text{in}~\mathbb{R}^N\setminusΩ. \end{split} \end{align*} where $a(-Δ)^{s(\cdot)}+b(-Δ)$ is a mixed operator with variable order $s(\cdot):\mathbb{R}^{2N}\rightarrow (0,1)$, $a, b\geq 0$ with $a+b>0$, $H$ is the Heaviside function (i.e., $H(t)=0$ if $t\leq0$, $H(t) = 1$ if $t>0),$ $Ω\subset\mathbb{R}^N$ is a bounded domain, $N\geq 2$, $λ>0$, $0<γ^{-}=\underset{x\in\barΩ}{\inf}\{γ(x)\}\leqγ(x)\leqγ^+=\underset{x\in\barΩ}{\sup}\{γ(x)\}<1$, $μ$ is a continuous variable parameter, and $F$ is the primitive function of a suitable $f$. The variable exponent $r(x)$ can be equal to the critical exponent $2_{s}^*(x)=\frac{2N}{N-2\bar{s}(x)}$ with $\bar{s}(x)=s(x,x)$ for some $x\in\barΩ,$ and $η$ is a positive parameter. We also show that as $α\rightarrow 0^+$, the corresponding solution converges to a solution for the above problem with $α=0$.

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