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arXiv 1908.11247math.AP
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一类带奇异非线性项的加权p-Laplace方程

On a class of weighted p-Laplace equation with singular nonlinearity

P. Garain, T. Mukherjee

摘要:

本文讨论了拟线性退化奇异椭圆型方程\begin{equation*} (P_\la)\left\{ \begin{split} -\text{div}(w(x)|\nabla u|^{p-2}\nabla u) &= g_{\la}(u),\;u>0\; \text{in}\; \Om, u&=0 \; \text{on}\; \partial \Om, \end{split}\right. \end{equation*}的解的存在性,其中$ \Om \subset \mb R^n$是光滑有界区域,$n\geq 3$,$\la>0$,$p>1$和$w$是Muckenhoupt权.使用变分技术,$g_{\la}(u)= \la f(u)u^{-q}$和$f$的某些假设,我们证明了每个$\la>0$的$(P_\la)$的解决方案的存在性。此外,当$g_{\la}(u)= \la u^{-q}+ u^{r}$时,我们建立了在参数$\la$的适当范围内$(P_\la)$至少存在两个解。这里我们假设$q\in (0,1)$和$r \in (p-1,p^*_s-1)$。

英文摘要:

This article deals with the existence of the following quasilinear degenerate singular elliptic equation \begin{equation*} (P_\la)\left\{ \begin{split} -\text{div}(w(x)|\nabla u|^{p-2}\nabla u) &= g_{\la}(u),\;u>0\; \text{in}\; \Om, u&=0 \; \text{on}\; \partial \Om, \end{split}\right. \end{equation*} where $ \Om \subset \mb R^n$ is a smooth bounded domain, $n\geq 3$, $\la>0$, $p>1$ and $w$ is a Muckenhoupt weight. Using variational techniques, for $g_{\la}(u)= \la f(u)u^{-q}$ and certain assumptions on $f$, we show existence of a solution to $(P_\la)$ for each $\la>0$. Moreover when $g_{\la}(u)= \la u^{-q}+ u^{r}$ we establish existence of atleast two solutions to $(P_\la)$ in a suitable range of the parameter $\la$. Here we assume $q\in (0,1)$ and $r \in (p-1,p^*_s-1)$.

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