The paper determines the source functions for which a generalized Fisher equation with exponential diffusion in cylindrical coordinates admits Lie symmetries beyond time translation and obtains the reduced ODEs.
Oliver, Applications of Lie Group to Differential Equations, Graduate texts in Mathematics, vol
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Lie symmetries of a generalized Fisher equation in cylindrical coordinates
The paper determines the source functions for which a generalized Fisher equation with exponential diffusion in cylindrical coordinates admits Lie symmetries beyond time translation and obtains the reduced ODEs.