Spatial chaotic structure of attractors of reaction-diffusion systems

Afraimovich, V.; Babin, A.; Chow, S.-N.

doi:10.1090/S0002-9947-96-01578-4

Spatial chaotic structure of attractors of reaction-diffusion systems
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by V. Afraimovich, A. Babin and S.-N. Chow PDF

Trans. Amer. Math. Soc. 348 (1996), 5031-5063 Request permission

Abstract:

The dynamics described by a system of reaction-diffusion equations with a nonlinear potential exhibits complicated spatial patterns. These patterns emerge from preservation of homotopy classes of solutions with bounded energies. Chaotically arranged stable patterns exist because of realizability of all elements of a fundamental homotopy group of a fixed degree. This group corresponds to level sets of the potential. The estimates of homotopy complexity of attractors are obtained in terms of geometric characteristics of the potential and other data of the problem.

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