The first aim of the paper is to study the Hermitizability of second-order differential operators,and then the correspon......

本文讨论了同谱研究中的两个重要问题,即如何判定同谱图和怎样构造同谱图的问题。研究了同谱点、无约束点、等价点和桥的性质,利用......

【正】 Two types of Lie algebras are presented,from which two integrable couplings associated with the Tuisospectral pro......