首页 | 官方网站   微博 | 高级检索  
相似文献
 共查询到20条相似文献,搜索用时 131 毫秒
1.
分别在有pre-order的无线性结构的集合和拓扑空间中,给出了有效点的存在性。作为应用,讨论了向量优化问题中解的存在性。最后给出了紧、弱紧、锥紧、锥半紧、上序紧、下序紧、上序半紧、准上序半紧和准下序半紧等之间的关系。  相似文献   

2.
在锥序Banach向量空间引入了集值映射在超有效意下的次微分(次梯度);在一定的条件下,证明次微分(次梯度)的存在性;得到了序扰动、双扰动集值优化问题超有效点集在次微分意义下的稳定性.  相似文献   

3.
关于区间上的Lorenz映射   总被引:1,自引:0,他引:1  
曾凡平  席鸿键 《数学学报》1997,40(6):939-946
本文引进了变换ζ.首先,用比文[4]简捷的方法证明了Lorenz映射的Sarkovski定理并更正了文[4]中的一个错误,还得到了扩张的Lorenz映射中周期点的存在性与其扩张常数之间的关系.其次,证明了Lorenz映射与其在变换ζ的像具有相等的捏制行列式.此外,给出了广义的Lorenz映射的周期点的存在性适合Sarkovski序关系的一个充分条件  相似文献   

4.
本文推广了Benson真有效点的定义,给出了凸锥相对内部的一个刻划,并在无尖性假设情况下,利用凸锥相对内部的刻划,证明了Hartley真有效点与改进的Benson真有效点是等价的;同时给出了一些有效点与真有效点标量化的一些结果.  相似文献   

5.
通过建立比较定理,利用半序与上下解方法,在Banach空间研究了源弹性梁的—类四阶常微分方程两点边值问题的最大解与最小解的存在性.  相似文献   

6.
本文给出了逆差商的一个紧凑行列式表示,从该表示式易知,一个函数在某n+1个点的n阶逆差商与这些点的排序有关,但与前n-1个点的局部换序无关.此外,还从另一角度定义倒差商,得出了倒差商与逆差商之间的关系以及倒差商的整体换序无关性.  相似文献   

7.
广义非线性Sin-Gordon方程的整体解及数值计算   总被引:1,自引:0,他引:1  
梁宗旗 《应用数学》2003,16(4):40-49
本文考察了一类广义非线性Sin-Gordon方程的周期初值问题,利用非线性Galerkin方法,证明了其整体解的存在性和唯一性,并给出了其有界吸引集的存在性.构造了全离散的Fourier拟谱显格式,利用有界延拓法证明了其格式的收敛性与稳定性,并给出了误差估计、算法分析及计算复杂度,最后,通过数值例子,检验了理论结果的可信性.为对此模型的数值分析提供了理论基础和一个有效的算法.  相似文献   

8.
许新斋  曹勇  李秀明 《数学研究》2007,40(2):139-142
给出了正则交换序半群的与素理想结构有关的若干性质,还给出了为有限个主理想的并的交换序半群类中的诺特性,阿基米德性,正则性以及有限生成性之间的一些关系。  相似文献   

9.
王建国 《数学学报》2000,43(1):43-48
本文在较弱的紧性条件下,给出了序Banach空间中不连续增算子的不动点的存在性结果.  相似文献   

10.
在Banach空间中讨论了超有效点的稳定性.在半连续的意义下,给出了当约束集和控制锥同时扰动时,超有效点的稳定性.  相似文献   

11.
In this paper, we study the problems on the existence, uniqueness and stability of almost periodic solution for a class of nonlinear system. Using fixed point theorem and Lyapunov functional, the sufficient conditions are given which guarantee the existence, uniqueness and stability of almost periodic solution for the system.  相似文献   

12.
In this paper,we prove the existence and the global exponential stability of the unique weighted pseudo almost-periodic solution of shunting inhibitory cellular neural networks with mixed time-varying delays comprising different discrete and distributed time delays.Some sufficient conditions are given for the existence and the global exponential stability of the weighted pseudo almost-periodic solution by employing fixed point theorem and differential inequality techniques.The results of this paper complement the previously known ones.Finally,an illustrative example is given to demonstrate the effectiveness of our results.  相似文献   

13.
高鸿 《经济数学》2009,26(3):1-7
利用Banach空间压缩不动点定理和微分不等式的分析技巧,研究一类具分布时滞的Hopfield神经网络模型的概周期解的存在性和稳定性。得到了系统存在概周期和全局指数稳定的新的充分条件。所得结果改进和推广了相关文献的结论。  相似文献   

14.
序扰动多目标规划的锥次微分稳定性   总被引:9,自引:1,他引:8  
对于局部凸拓扑向量空间的多目标规划问题,本文研究并得到当确定空间序的控制锥受扰动,它们的锥有效点(解)集和锥弱有效点(解)集分别在锥次微分和锥弱次微分意义下的稳定性结果.  相似文献   

15.
This article presents necessary and sufficient optimality conditions for weakly efficient solution, Henig efficient solution, globally efficient solution and superefficient solution of vector equilibrium problem without constraints in terms of contingent derivatives in Banach spaces with stable functions. Using the steadiness and stability on a neighborhood of optimal point, necessary optimality conditions for efficient solutions are derived. Under suitable assumptions on generalized convexity, sufficient optimality conditions are established. Without assumptions on generalized convexity, a necessary and sufficient optimality condition for efficient solutions of unconstrained vector equilibrium problem is also given. Many examples to illustrate for the obtained results in the paper are derived as well.  相似文献   

16.
In this paper, a class of fuzzy bidirectional associated memory (BAM) neural networks with transmission delays are studied. Some sufficient conditions are established for the existence , uniqueness and global exponential stability of equilibrium point. The sufficient conditions are easy to verify at pattern recognition and automatic control. Finally, an example is given to show feasibility and effectiveness of our results.  相似文献   

17.
ONTHEEXISTENCEOFPERIODICSOLUTIONOFHIGHERORDERPERIODICSYSTEM(王全义)华侨大学,邮编:362011WangQuanyi(HuaqiaoUniversity)Abstract:Inthispap...  相似文献   

18.
This article is concerned with the existence and robust stability of an equilibrium point that related to interval inertial Cohen–Grossberg neural networks. Such condition requires the existence of an equilibrium point to a given system, so the existence and uniqueness of the equilibrium point are emerged via nonlinear measure method. Furthermore, with the help of Halanay inequality lemma, differential mean value theorem as well as inequality technique, several sufficient criteria are derived to ascertain the robust stability of the equilibrium point for the addressed system. The results obtained in this article will be shown to be new and they can be considered alternative results to previously results. Finally, the effectiveness and computational issues of the two models for the analysis are discussed by two examples. © 2016 Wiley Periodicals, Inc. Complexity 21: 459–469, 2016  相似文献   

19.
In this paper, the global stability and almost periodicity are investigated for Hopfield neural networks with continuously distributed neutral delays. Some sufficient conditions are obtained for the existence and globally exponential stability of almost periodic solution by employing fixed point theorem and differential inequality techniques. The results of this paper are new and they complement the previously known ones. Finally, an example is given to demonstrate the effectiveness of our results.  相似文献   

20.
In this paper, the global exponential stability and periodicity are investigated for a class generalized high-order neural networks with time delays and impulses; some sufficient conditions are derived for checking the global exponential stability and existence of periodic solutions for this system using the generalized Halanay inequality, mathematical induction and a fixed point theorem. The criteria given are easily verified and possess many adjustable parameters, which provides flexibility for the design and analysis of the system. Finally, an example with numerical simulation is given to show the effectiveness of the proposed method and results.  相似文献   

设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司    京ICP备09084417号-23

京公网安备 11010802026262号