Nonlinear Self-adjointness for a Generalized Fisher Equation in Cylindrical Coordinates
DOI:
https://doi.org/10.5890/JAND.2015.03.008Abstract
In this work we study a generalization of the well known Fisher equation in cylindrical coordinates. We determine the subclasses of these equations which are nonlinear self-adjoint. By using a general theorem on conservation laws proved by Nail Ibragimov and the symmetry generators we find conservation laws for these partial differential equations without classical Lagrangians.References
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