## Advances in Differential Equations

- Adv. Differential Equations
- Volume 10, Number 7 (2005), 813-840.

### On a Yamabe-type problem on a three-dimensional thin annulus

M. Ben Ayed, K. El Mehdi, M. Hammami, and M. Ould Ahmedou

#### Abstract

We consider the problem: $ (P_{\varepsilon}):\, -\Delta u_\varepsilon = u_\varepsilon^{5},\, u_\varepsilon >0 $ in $ A_\varepsilon; \, u_\varepsilon= 0\,\, \mbox{ on } \partial A_\varepsilon $, where $\{A_{\varepsilon } \subset {\mathbb{R}}^3 : {\varepsilon } >0\}$ is a family of bounded annulus-shaped domains such that $A_{\varepsilon }$ becomes ``thin'' as ${\varepsilon }\to 0$. We show that, for any given constant $C>0,$ there exists $\varepsilon_0>0$ such that for any $\varepsilon < \varepsilon_0$, the problem $(P_{\varepsilon })$ has no solution $u_\varepsilon,$ whose energy, $\int_{A_\varepsilon}|\nabla u_\varepsilon |^2,$ is less than C. Such a result extends to dimension three a result previously known in higher dimensions. Although the strategy to prove this result is the same as in higher dimensions, we need a more careful and delicate blow up analysis of asymptotic profiles of solutions $u_{\varepsilon }$ when ${\varepsilon }\to 0$.

#### Article information

**Source**

Adv. Differential Equations Volume 10, Number 7 (2005), 813-840.

**Dates**

First available in Project Euclid: 18 December 2012

**Permanent link to this document**

https://projecteuclid.org/euclid.ade/1355867832

**Mathematical Reviews number (MathSciNet)**

MR2152353

**Zentralblatt MATH identifier**

1161.35380

**Subjects**

Primary: 35J60: Nonlinear elliptic equations

Secondary: 35J25: Boundary value problems for second-order elliptic equations 53C21: Methods of Riemannian geometry, including PDE methods; curvature restrictions [See also 58J60]

#### Citation

Ben Ayed, M.; Hammami, M.; El Mehdi, K.; Ould Ahmedou, M. On a Yamabe-type problem on a three-dimensional thin annulus. Adv. Differential Equations 10 (2005), no. 7, 813--840. https://projecteuclid.org/euclid.ade/1355867832