Group Actions on Monotone Skew-Product Semiflows with Applications

Details Group Actions on Monotone Skew-Product Semiflows with Applications Group Actions on Monotone Skew-Product Semiflows with Applications

2012-01-26

arxiv.org/abs/1201.5510v1

Mathematics

Dynamical Systems

Scientific paper

We discuss a general framework of monotone skew-product semiflows under a connected group action. In a prior work, a compact connected group $G$-action has been considered on a strongly monotone skew-product semiflow. Here we relax the requirement of strong monotonicity of the skew-product semiflows and the compactness of $G$, and establish a theory concerning symmetry or monotonicity properties of uniformly stable 1-cover minimal sets. We then apply this theory to show rotational symmetry of certain stable entire solutions for a class of non-autonomous reaction-diffusion equations on $\RR^n$, as well as monotonicity of stable travelling waves of some nonlinear diffusion equations in time recurrent structures including almost periodicity and almost automorphy.

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