## Topological Methods in Nonlinear Analysis

### Rate of convergence of global attractors of some perturbed reaction-diffusion problems

#### Abstract

In this paper we treat the problem of the rate of convergence of attractors of dynamical systems for some autonomous semilinear parabolic problems. We consider a prototype problem, where the diffusion $a_0(\cdot)$ of a reaction-diffusion equation in a bounded domain $\Omega$ is perturbed to $a_\varepsilon(\cdot)$. We show that the equilibria and the local unstable manifolds of the perturbed problem are at a distance given by the order of $\|a_\varepsilon-a_0\|_\infty$. Moreover, the perturbed nonlinear semigroups are at a distance $\|a_\varepsilon-a_0\|_\infty^\theta$ with $\theta< 1$ but arbitrarily close to $1$. Nevertheless, we can only prove that the distance of attractors is of order $\|a_\varepsilon-a_0\|_\infty^\beta$ for some $\beta< 1$, which depends on some other parameters of the problem and may be significantly smaller than $1$. We also show how this technique can be applied to other more complicated problems.

#### Article information

Source
Topol. Methods Nonlinear Anal., Volume 41, Number 2 (2013), 229-253.

Dates
First available in Project Euclid: 21 April 2016

https://projecteuclid.org/euclid.tmna/1461245476

Mathematical Reviews number (MathSciNet)
MR3114306

Zentralblatt MATH identifier
1331.35053

#### Citation

Arrieta, José M.; Bezerra, Flank D.M.; Carvalho, Alexandre N. Rate of convergence of global attractors of some perturbed reaction-diffusion problems. Topol. Methods Nonlinear Anal. 41 (2013), no. 2, 229--253. https://projecteuclid.org/euclid.tmna/1461245476

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