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In this paper we study the dynamics of a single transition layer of solution to a spatially inhomogeneous bistable reaction diffusion equation in one space dimension. The spatial inhomogeneity is give...n by a function a(x). In particular, we consider the case when a(x) is identically zero on an interval I and study the dynamics of transition layer on I. In this case the dynamics of the transition layer on I becomes so-called very slow dynamics. In order to analyze such a dynamics, we construct an attractive local invariant manifold giving the dynamics of transition layer and we derive the equation describing the flow on the manifold. We also give applications of our results to well known two nonlinearities of bistable type.show more
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PS2008-6