arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0906.2345math.AP
收藏

非线性次临界高阶椭圆狄利克雷问题解的存在性

Existence of solutions to nonlinear, subcritical higher-order elliptic Dirichlet problems

Wolfgang Reichel, Tobias Weth

摘要:

本文考虑有界光滑区域$Ω\subset\R^N$上的$2m$阶椭圆边值问题$Lu=f(x,u)$,其Dirichlet边界条件是在$\partialΩ$上.算子$L$是一个$2m$阶的一致椭圆线性算子,其主部分的形式为$\big(-\sum_{i,j=1}^N a_{ij}(x) \frac{\partial^2}{\partial x_i\partial x_j}\big)^m$。我们假设$f$在原点处是超线性的,并且满足$\lim \limits_{s\to\infty}\frac{f(x,s)}{s^q}=h(x)$,$\lim \limits_{s\to-\infty}\frac{f(x,s)}{|s|^q}=k(x)$,其中$h,k\in C(\overlineΩ)$是正函数,$q>1$是次临界的。通过结合度理论与新的和最近建立的先验估计,我们证明了非平凡解的存在性。

英文摘要:

We consider the $2m$-th order elliptic boundary value problem $Lu=f(x,u)$ on a bounded smooth domain $Ω\subset\R^N$ with Dirichlet boundary conditions on $\partialΩ$. The operator $L$ is a uniformly elliptic linear operator of order $2m$ whose principle part is of the form $\big(-\sum_{i,j=1}^N a_{ij}(x) \frac{\partial^2}{\partial x_i\partial x_j}\big)^m$. We assume that $f$ is superlinear at the origin and satisfies $\lim \limits_{s\to\infty}\frac{f(x,s)}{s^q}=h(x)$, $\lim \limits_{s\to-\infty}\frac{f(x,s)}{|s|^q}=k(x)$, where $h,k\in C(\overlineΩ)$ are positive functions and $q>1$ is subcritical. By combining degree theory with new and recently established a priori estimates, we prove the existence of a nontrivial solution.

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。

↑