知识与财富的链接
证明了有限时滞泛函数分方程解的一致最终有界性蕴含周期的存在性,从而推广了著名的Ｙｏｓｈｉｚａｗａ周期解定理。
It has been proved that the uniform ultimate boundedness of solutions implies the existence of periodic solutions to the functional differential equation with finite delay,and hence an extension of Yoshizawa theorem on peri