The primary objective of this paper is to study oscillatory expression of gene regulatory network in Escherichia coli me......

In this paper we investigate the existence of the periodic solutions of a nonlinear differential equation with a general......

讨论具有无穷时滞Liénard型方程x+э2F(x)/эx2x+g(t,xt)=p(t)的周期解问题,利用重合度理论得到了周期解存在的充分条件.......

In this paper we introduce a method to construct periodic solutions for the n-body problem with only boundary and topolo......

讨论一般的平面自治系统的解的有界性与周期解的存在性，得到了含有多个奇点的（１）的解的正向有界充要条件和存在周期解的充分条件，推广和......