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New conditional symmetries and exact solutions of reaction–diffusion systems with power diffusivities

Roman Cherniha1,2 and Oleksii Pliukhin1

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A wide range of new Q-conditional symmetries for reaction–diffusion systems with power diffusivities are constructed. The relevant non-Lie ansätze to reduce the reaction–diffusion systems to ODE systems and examples of exact solutions are obtained. The relation of the solutions obtained with the development of spatially inhomogeneous structures is discussed.


PACS

05.60.-k Transport processes

02.30.Hq Ordinary differential equations

02.30.Jr Partial differential equations

MSC

35K57 Reaction-diffusion equations

Subjects

Mathematical physics

Statistical physics and nonlinear systems

Dates

Issue 18 (9 May 2008)

Received 21 November 2007, in final form 14 March 2008

Published 21 April 2008



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