Sharp estimates for the global attractor of scalar reaction-diffusion equations with a Wentzell boundary condition

Details Sharp estimates for the global attractor of scalar reaction-diffusion equations with a Wentzell boundary condition Sharp estimates for the global attractor of scalar reaction-diffusion equations with a Wentzell boundary condition

2011-03-16

arxiv.org/abs/1103.3179v3

Mathematics

Dynamical Systems

to appear in J. Nonlinear Science

Scientific paper

In this paper, we derive optimal upper and lower bounds on the dimension of the attractor AW for scalar reaction-diffusion equations with a Wentzell (dynamic) boundary condition. We are also interested in obtaining explicit bounds about the constants involved in our asymptotic estimates, and to compare these bounds to previously known estimates for the dimension of the global attractor AK; K \in {D;N; P}, of reactiondiffusion equations subject to Dirichlet, Neumann and periodic boundary conditions. The explicit estimates we obtain show that the dimension of the global attractor AW is of different order than the dimension of AK; for each K \in {D;N; P} ; in all space dimensions that are greater or equal than three.

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