考虑髙阶非线性泛函微分方程解的振动性,用非迭代方法给出一个新振动准则,推广了目前已有的某些结果.同时,用 一个较为简便迭代方法,证明另一个定理.
This paper studies oscillation of solutions to high - order nonlinear functional differential equations, putting forward some new oscil-lation criteria by using non - iterative method, which generalize or improve some results given in some literature. At the same time, a relative-ly simple iterative method is used to prove another the theorem.