In this paper, a three-term recurrence formula of discrete Laguerre functions and the definition of the unstructured model are given. 本文给出离散Laguerre函数的三项递推公式和非结构模型的定义;
On the Comparison Theorem, Separation Theorem and Oscillation of General Three-term Recurrence Relations 关于三项递归关系的比较定理、分离定理及振动性