Characterization of the attractor for nonautonomous reaction-diffusion equations with discontinuous nonlinearity

JOURNAL OF DIFFERENTIAL EQUATIONS

卷:275

Article

Valero, Jose¹ 

[1] Univ Miguel Hernandez Elche, Ctr Invest Operat, Avda Univ S-N, Alicante 03202, Spain

关键词: Differential inclusions;    Reaction-diffusion equations;    Pullback attractors;    Nonautonomous dynamical systems;    Multivalued dynamical systems;    Structure of the attractor;   

DOI  :  10.1016/j.jde.2020.11.036

来源: Elsevier

【 摘 要 】

In this paper, we study the asymptotic behavior of the solutions of a nonautonomous differential inclusion modeling a reaction-diffusion equation with a discontinuous nonlinearity. We obtain first several properties concerning the uniqueness and regularity of non-negative solutions. Then we study the structure of the pullback attractor in the positive cone, showing that it consists of the zero solution, the unique positive nonautonomous equilibrium and the heteroclinic connections between them, which can be expressed in terms of the solutions of an associated linear problem. Finally, we analyze the relationship of the pullback attractor with the uniform, the cocycle and the skew product semiflow attractors. (C) 2020 Elsevier Inc. All rights reserved.

【 授权许可】

Free