A new isospectral problem is firstly presented, then we derive integrable system of soliton hierarchy. Also we obtain new integrable couplings of the generalize
<正> From a new Lie algebra proposed by Zhang, two expanding Lie algebras and its corresponding loop algebrasare obtained.Two expanding integrable systems are p
<正>In this paper,we applied the rational formal expansion method to construct a series of soliton-like and period-form solutions for nonlinear differential-dif