RT info:eu-repo/semantics/article
T1 Characterization of cocycles attractors for nonautonomous reaction-diffusion equations
A1 Cardoso, Carlos
A1 Langa, Juan
A1 Obaya, Rafael
AB In this paper, we describe in detail the global and cocycle attractors related to nonautonomous scalar differential equations with diffusion. In particular, we investigate reaction–diffusion equations with almost-periodic coefficients. The associated semiflows are strongly monotone which allow us to give a full characterization of the cocycle attractor. We prove that, when the upper Lyapunov exponent associated to the linear part of the equations is positive, the flow is persistent in the positive cone, and we study the stability and the set of continuity points of the section of each minimal set in the global attractor for the skew product semiflow. We illustrate our result with some nontrivial examples showing the richness of the dynamics on this attractor, which in some situations shows internal chaotic dynamics in the Li–Yorke sense. We also include the sublinear and concave cases in order to go further in the characterization of the attractors, including, for instance, a nonautonomous version of the Chafee–Infante equation. In this last case we can show exponentially forward attraction to the cocycle (pullback) attractors in the positive cone of solutio
PB World Scientific
SN 1793-6551
YR 2016
FD 2016
LK http://uvadoc.uva.es/handle/10324/25801
UL http://uvadoc.uva.es/handle/10324/25801
LA eng
NO International Journal of Bifurcation and Chaos Vol. 26, No. 08, 1650135 (2016)
NO Producción Científica
DS UVaDOC
RD 22-nov-2024