The El Nio/La Nia and the Southern Oscilla-tion are an interannual phenomenon involved in the tropicalPacific Ocean-atmosphere interactions. In this paper, basedon a kind of simple coupled ocean-atmosphere model forEN...
By using the generalized degree theory, some periodically perturbed functional differential equations have been proved to have at least one periodic solution if the associated homogeneous linear equations have no nont...
Consider the following vector boundary value problem with boundary perturbation where μ(>0) and ε are real small parameters, x, f, b and y, g, a are respectively r-dimensional and m-dimensional vector functions...
The traditional KBM averaging method has been successfully applied to analyze the full-frequency vibration (i. e. the numbers of frequencies of degenerate linear systems are equal to the numbers of freedom) of nonline...
For the detection and study of chaotic motions in a two-dimensional autonomous system subject to external periodic forcing, Melnikov’s method is one of a few analytical methods. In recent years, Chow et al. and J. P....
In the seminar on differential geometry held at Princeton, S. T. Yau gave a lecture entitled 'Problem Section' which contains 120 open problems in differential geometry. One of them is whether there exist four distinc...
The perturbations in molecular spectra are complex and important phenomena, the study of which remains very difficult so far. CaOHA2Π-X2∑△V1=1 and △V2=2 transitions, which appear in the 16530—16730 cm-1 region an...
So far, most of investigations on soliton in plasma are based on the weak nonlinear theory, for example, Refs. [1] and [2] only considered the interaction of second order field.Although the effects of strong non-linea...