研究变系数李方程组,证明了变系数李方程组具有Painlevé性质,给出该方程组的Lax对,并利用截断展开得到该方程组的自Bcklund变换.
In this paper,a variable-coefficient Li equations is investigated.Firstly the integrability of a variable-coefficient Li equations is studied with Painlevéanalysis.Secondly the Lax pair is established.Finally,the auto-Bcklund transformation are derived using truncation expansion.