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## Existence and nonexistence of solutions for a singular elliptic problem with a nonlinear boundary condition

### Tom 109 / 2013

Annales Polonici Mathematici 109 (2013), 93-107 MSC: 35B38, 35J92. DOI: 10.4064/ap109-1-7

#### Streszczenie

We consider the existence and nonexistence of solutions for the following singular quasi-linear elliptic problem with concave and convex nonlinearities: $$\left\{ \begin{array}{@{}l} -\,\mathrm{div}(|x|^{-ap}|\nabla u|^{p-2}\nabla u)+h(x)|u|^{p-2}u=g(x)|u|^{r-2}u,\quad x\in\varOmega,\\ |x|^{-ap}|\nabla u|^{p-2}\frac{\partial u}{\partial \nu}=\lambda f(x)|u|^{q-2}u, \quad x \in \partial\varOmega, \end{array} \right.$$ where $\varOmega$ is an exterior domain in $\mathbb{R}^N$, that is, $\varOmega={\mathbb {R}^N} \setminus D$, where $D$ is a bounded domain in $\mathbb {R}^N$ with smooth boundary $\partial D$ $(=\partial\varOmega)$, and $0\in \varOmega.$ Here $\lambda>0$, $0\le a < (N-p)/p$, $1< p< N$, ${\partial}/{\partial\nu}$ is the outward normal derivative on $\partial\varOmega$. By the variational method, we prove the existence of multiple solutions. By the test function method, we give a sufficient condition under which the problem has no nontrivial nonnegative solutions.

#### Autorzy

• Zonghu XiuCollege of Science
Hohai University
Nanjing 210098, P.R. China
and
Science and Information College
Qingdao Agricultural University
Qingdao 266109, P.R. China
e-mail
• Caisheng ChenCollege of Science
Hohai University
Nanjing 210098, P.R. China
e-mail

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