Cauchy Problems for KdV-type Equations and Higher-Order Conditional Symmetries
Authors:
LI Ji-Na ZHANG Shun-Li ZUO Su-Li
Affiliation:
1. Center for Nonlinear Studies, Department of Mathematics, Northwest University,Xi'an 710069, China;2. Center of Nonlinear Science, Ningbo University, Ningbo 315211, China
Abstract:
We develop the generalized conditional symmetry (GCS) approach to solve the problem of dimensional reduction of Cauchy problems for the KdV-type equations. We characterize these equations that admit certain higher-order GCSs and show the main reduction procedure by some examples. The obtained reductions cannot be derived within the framework of the standard Lie approach.