2002/07/03 by Martino Prizzi, Prizzi, Martino, Krzysztof P. Rybakowski +1 · 1 citation
Computer Science · Engineering · Mathematics · #35K57 #37L25 #Advanced Mathematical Modeling in Engineering #Analysis of PDEs (math.AP) #Dynamical Systems (math.DS) #FOS: Mathematics #Numerical methods in inverse problems #Stability and Controllability of Differential Equations #math.AP #math.DS #msc:35K57 #msc:37L25
paper · pdf · doi:10.48550/arxiv.math/0207032
21 pages; to appear on Stud. Math
arxiv created 2002/07/03 · openalex publication_date 2002/07/03 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
In this paper we study a family of semilinear reaction-diffusion equations on thin spatial domains, lying close to a lower dimensional submanifold M. As the thickness tends to zero, the domains collapse onto (a subset of) M. As it was proved in a previous paper (M. Prizzi, M. Rinaldi and K. P. Rybakowski, Curved thin domains and parabolic equations, Stud. Math. 151), the above family has a limit equation, which is an abstract semilinear parabolic equation defined on a certain abstract limit phase space. One of the objectives of this paper is to give more manageable characterizations of the limit phase space. Under additional hypotheses, we also give a simple description of the limit equation. If, in addition, M is a sphere and the nonlinearity of the above equations is dissipative, we prove that, if the thickness is small enough, the corresponding equation possesses an inertial manifold, i.e. an invariant manifold containing the attractor of the equation. We thus obtain the existence of inertial manifolds for reaction-diffusion equations on certain classes of thin domains of genuinely high dimension.