An adequate set of k-valued logic is provided,which contains only two operators.It is also proved that this adequate set......

对于由固定生成元集与关系所确定的群，本文致力于用Grobner-Shirshov基的方法找出这种群中任意元素的唯一表示方法（normal form）。群......

Using the anal.vtical and numerical approaches, the nonlinear dynamic behaviors in the vicinity of several compound crit......

A system of coupled non-linear oscillators is capable of displaying a rich variety of collective states many of which re......

In this paper,the hybrid control is applied to Hopf bifurcation control of a new modified 4D hyperchaotic Lü system of ......

本文研究了具有对称实焦点的分段线性类-Liénard系统的穿越周期轨.通过把系统约化成一个有更少参数的正规形并构造左右子系统的Po......

　　In this talk, some new results we obtained recently on generalized Hamiltonian systems will be presented.Mathematica......

　　Bifurcation is one of the main topics in nonlinear dynamics.And normal form is one of important tools bifurcation an......

为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7......

运用中心流形和范式理论，研究了非线性扰动系统平衡点的稳定性和鲁棒性，给出了二阶系统平衡点稳定的充要条件和鲁棒稳定的几个充分条......

对经典平均法提出一种改进方案。并在ｎ维一般情况下，证明平均方程恒满足规范形定义，从而可将其视为规范形理论在小参数振动方程中的推......

利用接近恒同的非线性变换，计算出了非共振双Ｈｏｐｆ分叉系统规范形和系数。利用广义坐标变换，将非共振单自由度非线性强迫振动系统变换为双......

拓展了范式方法，使其可以研究强非线性振动问题。创新之处在于改进了Ｎａｙｆｅｈ关于响应频率的选取，根据振动过程中基频的变化选取响应的频率。......

证明了四元数体上任一次数大于１的λ多项式必可分解作一次因式之积，且任一四元数方阵与复方阵相似。......

非线性波方程在光学和等离子体等物理领域有广泛的应用.本文主要研究一类具有能量守恒性质的非线性波方程在特定初值条件下解的长......