吸收子的逼近

本文考虑耦合振子系统及对其按时间离散化（时间长为ｈ）得到的离散动力系统，证明在一定条件下，这两个系统都有一维整体吸收子ｌ和ｌｈ，进一步证明当时间步长ｈ→０时，ｌｈ→ｌ。     

广义KdV—Burgers方程吸引子的谱逼近

１引言近年来．随着对无限维动力系统研究的深入,人们对非线性发展方程解的渐近性态了解得越来越多．例如对某些耗散的非线性发展方程,象Ｎａｖｉｅｒ－Ｓｔｏｋｅｓ方程、Ｋｕｒａｍｏｔｏ－Ｓｉｖａｓｈｉｎ－ｓｋｙ方程等都存在整体的吸引子．系统的渐近性质和系统的复杂性完全由整体吸引子所确定（详细请参见［３］）．与此同时,这类系统的有限维逼近也是人们非常关心的问题,在这方面已有许多工作,如Ｊ．Ｋ．Ｈａｌｅ等人在［５］中基于有限元方法研究了某些非线性发展方程．得到了近似吸引子是上半连续的;Ｃ．Ｍ．Ｅｌｌｏｔｔａ…     

Lozi映射的奇怪吸引子和吸引域的结构

本文证明了在［１］中给出的参数区域内，对应的Ｌｏｚｉ映射的奇怪吸引子Λ是横截及弱横截同宿点的闭包，并且Λ上任意两个双曲周期点形成横截及弱横截环；奇怪吸引子的吸引域的闭包就是双曲不动点Ｘ的稳定流形的闭包；进一步，吸引域恰好是ωｓ（Ｘ）及那些边界包含在ωｓ（Ｘ）及ωｕ（Ｘ）中区域的并，从而我们证明了对于Ｌｏｚｉ映射，Ｍ．Ｂｅｎｅｄｉｃｋｓ和Ｌ．Ｃａｒｌｅｓｏｎ等的有关奇怪吸引子的吸引域的结构的猜测．     

进位吸引子与拓扑熵

Let M be a manifold (possibly with boundary), and f:M→M be continuous. Call a closed invariant set A包含M an adic attractor of f if it attracts almost all points (in the sense of Lebesgue measure) and the restriction f|A is topologically conjugate to an adic system. Such an attractor A is called n-adic if the restriction flA can be topologically conjugate the n-adic system.     

具有进位吸引子的区间映射

对于一个具有n-进位吸引子的区间连续映射,证明了"n不是2的方幂"是该映射具有正拓扑熵的充分条件但不是必要条件;探讨了函数方程f3(λx)=λf(x)的一类解,并证明这类解中的每一个成员都有3-进位吸引子.     

具有进位吸引子的区间映射

对于一个具有n-进位吸引子的区间连续映射,证明了：“n不是2的方幂”是该映射具有正拓扑熵的充分条件但不是必要条件；探讨了函数方程f~3(λx)=λf(x)的一类解,并证明这类解中的每一个成员都有3-进位吸引子．     

Lozi映射奇怪吸引子的探讨

本文利用横截环理论,详细分析了Lozi映射的奇怪吸引子的存在性和结果,所得结果与数值结果相吻合,并解释了若干数值现象,从而进一步论证[1]所提出奇怪吸引子结论是合理的。     

非线性应变波耦合组的吸引子的正则性

本文研究了非线性应变波方程与Schr(?)dinger方程耦合系统Cauchy问题吸引 子的正则性.获得了该系统在空间Eo中存在整体吸引子Ao,并且Ao与E1中的强吸 引子A1相等.     

发展超导问题的局部耗散性和吸引子

本文得到了在Lorentz规范下一类发展超导问题解的整体存在性、局部耗散 性和吸引子的存在性.     

Attractors for General Operators

In this article we introduce the notion of a minimal attractor for families of operators that do not necessarily form semigroups. We then obtain some results on the existence of the minimal attractor. We also consider the nonautonomous case. As an application, we obtain the existence of the minimal attractor for models of Cahn-Hilliard equations in deformable elastic continua.     

关于局部随机吸引子若干性质的注记(英文)

In this note, we study some properties of local random pull-back attractors on compact metric spaces. We obtain some relations between attractors and their fundamental neighborhoods and basins of attraction. We also obtain some properties of omega-limit sets, as well as connectedness of random attractors. A simple deterministic example is given to illustrate some confusing problems.     

耗散孤立波方程的吸引子

本文研究耗散孤立波方程的长期动力学行为：吸引子的存在性、吸引子的几何结构、耗散系统参数扰动下动力行为、吸引子的分形维估计．     

推广的B-BBM方程的整体吸引子和指数吸引子

本文对耗散的推广的B－BBM方程的长时间动力学行为进行了研究，证明了该方程整体吸引子和指数吸引子的存在性。     

一类反应扩散方程组最大吸引子的正则性和维数估计

反应扩散方程组的最大吸引子通常是在不变区域内研究,如果不具有不变区域,或者去掉不变区域的限制而在全空间考虑这类问题,其结果如何？本文将证明一类反应扩散方程组在全空间最大吸引子的存在性,并对该吸引子的正则性进行了详细讨论,还给出了该吸引子的维数估计．     

Exponential Attractors for the Generalized Ginzburg-Landau Equation

Abstract In this paper, we establish the global fast dynamics for the derivative Ginzburg-Landau equation in two spatial dimensions. We show the squeezing property and the existence of finite dimensional exponential attractors for this equation * The author is supported by the Postdoctoral Foundation of China     

DYNAMICS IN COUPLED SYSTEMS OF JOSEPHSON JUNCTIONS WITHOUT CAPACITY EFFECT

O.IntroductionDynamicalbehavioroftheJosephsonjunctionhaslongbeenofinterestbecauseitreflectsarichvarietyofillterestingphenomena.Muchprogressonthedynamicsofasingle--pointjunctionandasystemofN-pointcoupledjunctions,whichcanberegardedasdiscretizedversionsofacontinuousJosephsonjunction,hasbeenmadebyexperiments,numericalcalculationsandtheoreticalanalysis["'15].ItiswellknownthattheequationofonecontinuousJosephsonjunctionisthedampedanddrivensine-Gordonequation,ofwhichtheexistenceanddimensionoftheglo…     

Equi-Attraction and Continuous Dependence of Strong Attractors of Set-Valued Dynamical Systems on Parameters

Equi-attraction properties of the global attractors of a family of set-valued dynamical systems {G_λ, λ∈Λ} with respect to a parameter λ∈Λ, where Λ is a compact metric space, are investigated. In particular, under appropriate conditions, it is shown that the equi-attraction of the family is equivalent to the continuity of in λ with respect to the Hausdorff distance. An example involving differential inclusions is given. Mathematics Subject Classifications (2000) Primary 47H17, 58F03, 34C20. Desheng Li: Supported by NNSF of China (10251002) and NNSF of Gansu province (3ZS041-A25-006).     

Attractors for a Nonclassical Diffusion Equation

Abstract For a nonclassical diffusion equation,the asymptotic behavior is investigated,and the existence ofa global attractor is proved.     

On Surface Attractors and Repellers in 3-Manifolds

We show that if f: M ³ → M ³ is an A diffeomorphism with a surface two-dimensional attractor or repeller $\mathcal{B}$ with support $M_\mathcal{B}^2$ , then $\mathcal{B} = M_\mathcal{B}^2$ and there exists a k ≥ 1 such that (1) $M_\mathcal{B}^2$ is the disjoint union M ₁ ² ? ? ? M _k ² of tame surfaces such that each surface M _i ² is homeomorphic to the 2-torus T ²; (2) the restriction of f ^k to M _i ² , i ∈ {1,..., k}, is conjugate to an Anosov diffeomorphism of the torus T ².