Exponential attractors for a nonlocal delayed reaction-diffusion equation on an unbounded domain

Hu, Wenjie; Caraballo, Tomás

doi:10.1090/proc/16978

Exponential attractors for a nonlocal delayed reaction-diffusion equation on an unbounded domain
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by Wenjie Hu and Tomás Caraballo;

Proc. Amer. Math. Soc. 152 (2024), 4785-4797

DOI: https://doi.org/10.1090/proc/16978

Published electronically: September 20, 2024

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Abstract:

The main objective of this paper is to investigate exponential attractors for a nonlocal delayed reaction-diffusion equation on an unbounded domain. We first obtain the existence of a globally attractive absorbing set for the dynamical system generated by the equation under the assumption that the nonlinear term is bounded. Then, we construct exponential attractors of the equation directly in its natural phase space, i.e., a Banach space with explicit fractal dimension by combining squeezing properties of the system as well as a covering lemma of finite dimensional subspaces of a Banach space. Our result generalizes the methods established in Hilbert spaces and weighted spaces, and the fractal dimension of the obtained exponential attractor does not depend on the entropy number but only depends on some inner characteristic of the studied equation.

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Proceedings of the American Mathematical Society

Exponential attractors for a nonlocal delayed reaction-diffusion equation on an unbounded domain
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Abstract: