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Group-Invariant Solutions for the Generalised Fisher Type Equation

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DOI: 10.4236/ns.2015.713061    4,269 Downloads   4,700 Views   Citations


In this paper, we construct the group-invariant (exact) solutions for the generalised Fisher type equation using both classical Lie point and the nonclassical symmetry techniques. The generalised Fisher type equation arises in theory of population dynamics. The diffusion term and coefficient of the source term are given as the power law functions of the spatial variable. We introduce the modified Hopf-Cole transformation to simplify a nonlinear second Order Ordinary Equation (ODE) into a solvable linear third order ODE.

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The authors declare no conflicts of interest.

Cite this paper

Louw, K. and Moitsheki, R. (2015) Group-Invariant Solutions for the Generalised Fisher Type Equation. Natural Science, 7, 613-624. doi: 10.4236/ns.2015.713061.


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