Propagation Phenomena in a Bistable Reaction Diffusion System PDF Download

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Propagation Phenomena in a Bistable Reaction Diffusion System

Propagation Phenomena in a Bistable Reaction Diffusion System PDF Author: John Rinzel
Publisher:
ISBN:
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Languages : en
Pages : 63

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Book Description
Consideration is given to a system of reaction diffusion equations which have qualitative significance for several applications including nerve conduction and distributed chemical/biochemical systems. These equations are of the FitzHugh-Nagumo type and contain three parameters. For certain ranges of the parameters the system exhibits two stable singular points. A singular perturbation construction is given to illustrate that there may exist both pulse type and transition type traveling waves. A complete, rigorous, description of which of these waves exist for a given set of parameters and how the velocities of the waves vary with the parameters is given for the case when the system has a piecewise linear nonlinearity. Numerical results of solutions to these equations are also presented. These calculations illustrate how waves are generated from initial data, how they interact during collisions, and how they are influenced by local disturbances and boundary conditions.