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On pullback attractors in for nonautonomous reaction – diffusion equations. (English) Zbl 1202.35036
Summary: Using a recent method based on the concept of the Kuratowski measure of noncompactness of a bounded set together with some new estimates of solutions, we prove the existence of a unique minimal pullback attractor for the evolutionary process associated with a nonautonomous nonlinear reaction-diffusion system in H 0 1 in which the right-hand side satisfies only a certain integrability condition. In particular, we generalize a result obtained by Y. Li and Ch. Zhong [Appl. Math. Comput. 190, No. 2, 1020–1029 (2007; Zbl 1126.37049)], where at most an exponential growth of the right-hand side has been assumed for times going to both plus and minus infinity.
MSC:
35B41Attractors (PDE)
35K57Reaction-diffusion equations