Shan Ma and Chunyou Sun
School of Mathematics and Statistics, Lanzhou University, Lanzhou 730000, China
In this paper we study the existence and some properties of the global attractors for a class of weighted equations when the weighted Sobolev space $ H_0^{1,a}(\Omega) $ (see Definition 1.1) cannot be bounded embedded into $ L^2(\Omega) $. We claim that the dimension of the global attractor is infinite by estimating its lower bound of $ Z_2 $-index. Moreover, we prove that there is an infinite sequence of stationary points in the global attractor which goes to 0 and the corresponding critical value sequence of the Lyapunov functional also goes to 0.
Keywords: Degenerate parabolic equations, global attractors, Z2-index, stationary points.
Mathematics Subject Classification: Primary: 35K65, 35P30, 35B41.
Citation: Shan Ma, Chunyou Sun. Long-time behavior for a class of weighted equations with degeneracy. Discrete & Continuous Dynamical Systems - A, 2020, 40 (3) : 1889-1902. doi: 10.3934/dcds.2020098
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Shan Ma Chunyou Sun