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Complicated dynamics of scalar reaction diffusion equations with a nonlocal term

  • Bernold Fiedler (a1) and Peter Poláčik (a2)

Synopsis

We consider the dynamics of scalar equations ut, = uxx + f(x, u) + c(x)α(u), 0 < x < l, where α denotes some weighted spatial average and Dinchlet boundary conditions are assumed. Prescribing f, c, α appropriately, it is shown that complicated dynamics can occur. Specifically, linearisations at equilibria can have any number of purely imaginary eigenvalues. Moreover, the higher order terms of the reduced vector field in an associated centre manifold can be prescribed arbitrarily, up to any finite order. These results are in marked contrast with the case α = 0, where bounded solutions are known to converge to equilibrium.

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Complicated dynamics of scalar reaction diffusion equations with a nonlocal term

  • Bernold Fiedler (a1) and Peter Poláčik (a2)

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