## Differential and Integral Equations

### Global attractor for some wave equations of $p-$ and $p(x)-$Laplacian type

#### Abstract

We study the existence of solutions for the equation $u_{tt}-\Delta_{p(x)} u - \Delta u_{t} + g(u) = f(x,t), \; x \in \Omega$ (bounded) $\subset \mathbb R^n, \; t>0$ in both the isotropic case $(p(x) \equiv p$, a constant) and the anisotropic case $(p(x)$ a measurable function). Furthermore, in the isotropic case we obtain results concerning the asymptotic behavior of solutions. Since uniqueness for this type of problem seems rather difficult, a method implementing generalized semiflows is being used to prove the existence of a global attractor in the phase space $W_0^{1,p}(\Omega)\times L^2(\Omega)$, when $p\geq n$.

#### Article information

Source
Differential Integral Equations, Volume 24, Number 1/2 (2011), 159-176.

Dates
First available in Project Euclid: 20 December 2012

Stavrakakis, Nikolaos M.; Stylianou, Athanasios N. Global attractor for some wave equations of $p-$ and $p(x)-$Laplacian type. Differential Integral Equations 24 (2011), no. 1/2, 159--176. https://projecteuclid.org/euclid.die/1356019049