Invariant subspaces and conditional Lie-Bcklund symmetries for the reaction-diffusion system
XIA Yarong1,2
(1 School of Information and Engineering, Xi′an University,Xi′an 710065, Shaanxi, China;2 School of Mathematics, Northwest University, Xi′an 710127, Shaanxi, China)
Abstract:
The conditional Lie-Bcklund symmetry (CLBS) approach is applied to study the reaction-diffusion system.It is shown that the system of equation admit a class of invariant subspaces,which is equivalent to a kind of higher-order conditional Lie-Bcklund symmetries of the system. As a result, generalized separable variable solutions defined on the polynomial, trigonometric and exponential invariant subspace are constructed for some resulting equation.
KeyWords:
reaction-diffusion system; invariant subspace;conditional Lie-Bcklund symmetry; generalized separable variable solution