摘要
Two new explicit Lie algebras are introduced for which the nonlinear integrable couplings of the Giachetti- Johnson （G J） hierarchy and the Yang hierarchy are obtained, respectively. By employing the variational identity their ttamiltonian structures are also generated. The approach presented in the paper can also provide nonlinear integrable couplings of other soliton hierarchies of evolution equations.
基金
Supported by the Fundamental Research Funds of the Central University under Grant No. 2010LKS808
the Natural Science Foundation of Shandong Province under Grant No. ZR2009AL021
