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在本文中,我们建立了集值映射的拟闭性和序列拟闭性的概念。在讨论巴拿赫空间上局部Lipschitz函数的广义梯度的性质时,得到了集值映射x→δf(x)的*弱上半连续与*弱拟闭性等价的结果。并通过例子说明了*弱拟闭性弱于x弱序列拟闭性,从而改正了文(1)中的某些错误。 相似文献
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对集值映射引入了高阶Clarke导数,给出了判别集值向量优化所有效性的二阶Kuhn-Tucker条件,并且,借助于集值映射的强(弱)伪凸性给出了一个弱有效解的充分条件。 相似文献
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研究拓扑向量空间到连续线性映射空间映射的弱向量变分不等式和与之相关 的纯量型变分不等式解集的关系, 引入弱和强一致连续概念,利用纯量型变分不等式 解集所表征的集值映射的特性给出弱向量变分不等式解集连通的一个充分条件。 相似文献
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在m维正欧式空间的子集类上, 通过引入集合的新序和依序收敛的概念,讨论新序意义下集值模糊测度的伪自连续、一致伪自连续性,并研究它们的蕴涵关系,从而丰富集值模糊测度的理论. 相似文献
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中X是自反Banach空间,K是X的有界、闭、凸子集。研究包含(M)型算子的变分不等式问题:A↑f∈X,求u∈K,使(w-f,v-u)≥0,w∈Tu。其中T是一个有限连续.(M)型、有界集值映射。利用KKM映射和Gwinner定理,我们得到了该变分不等式可解性的结果。最后讨论了这样的变分不等式它的应用。 相似文献
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约束锥扰动多目标规划锥有效解集的闭性和半连续性 总被引:4,自引:0,他引:4
本文研究拓扑向量空间中目标映射和约束映射均为连续,约束映射的约束锥为半连续的条件下,受扰动可达目标集的锥有效点集和锥弱有效点集的闭性、半连续性和锥半连续性.在此基础上,得到了约束锥扰动多目标规划问题的锥有效解集和锥弱有效解集的闭性和半连续性. 相似文献
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It is well known that the solution map of a quadratic program where only the linear part of the data is subject to perturbation is an upper Lipschitz multifunction. This paper characterizes the continuity and lower semicontinuity of that solution map.This work was supported by the Brain Korea 21 Project in 2003, the APEC Postdoctoral Fellowships Program, and the KOSEF Brain Pool Program. The authors thank Professor F. Giannessi and two anonymous referees for helpful comments.Communicated by F. Giannessi 相似文献
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The relation between near continuity and sequential continuity for mappings between metric spaces is explored constructively. It is also shown that the classical implications “near continuity implies sequential continuity” and “near continuity implies apart continuity” are essentially nonconstructive. 相似文献
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M. Akdag 《Acta Mathematica Hungarica》2003,99(1-2):143-154
We define upper (lower) super continuous multifunctions and obtain some characterizations and basic properties of such a multifunction.
Also some relationships between the concept of super continuity and known concepts of continuity and strongly Θ-continuity
are given.
This revised version was published online in June 2006 with corrections to the Cover Date. 相似文献
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《Journal of Mathematical Analysis and Applications》1986,120(1):150-168
This paper studies continuity properties of the marginal multifunction and solution multifunction for optimization problems with respect to a preorder relation. Among others, we present a number of results which are generalizations to multicriteria problems of Theorems due to C. Berge, W. Hogan, T. Tanino, and Y. Sawaragi. 相似文献
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Nihat Gökhan Göğüş 《Optimization》2017,66(7):1055-1063
The purpose of the paper is to give a complete characterization of the continuity of lower envelopes in the infinite dimensional spaces. The characterization of upper or lower semicontinuity of envelopes, when stated in the language of multifunctions, has a dual geometric character which depends on the upper or lower semicontinuity of the corresponding multifunction. 相似文献
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Roger J.-B. Wets 《Computational Optimization and Applications》2003,25(1-3):269-282
It is shown that local epi-sub-Lipschitz continuity of the function-valued mapping associated with a perturbed optimization problem yields the local Lipschitz continuity of the inf-projections (= marginal functions, = infimal functions). The use of the theorem is illustrated by considering perturbed nonlinear optimization problems with linear constraints. 相似文献
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为了实现在连续性空间中的离散分段问题,采用解决离散性问题的方法虚拟构造连续性集合,将连续性问题映射为分段的离散问题,根据集合中元素的离散特性实现连续性模型的分段求解.通过数据结构的设计与压缩路径的算法证实,模型的映射能够解决实际问题的分段求解. 相似文献
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对二元函数连续性判定条件给出了详细分析,强调有关问题的关键点,纠正了常见的模糊认识,得到一系列连续性充分条件及其推广形式. 相似文献
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Adam B. Levy 《Set-Valued Analysis》2006,14(3):249-261
Calmness of multifunctions is a well-studied concept of generalized continuity in which single-valued selections from the image sets of the multifunction exhibit a restricted type of local Lipschitz continuity where the base point is fixed as one point of comparison. Generalized continuity properties of multifunctions like calmness can be applied to convergence analysis when the multifunction appropriately represents the iterates generated by some algorithm. Since it involves an essentially linear relationship between input and output, calmness gives essentially linear convergence results when it is applied directly to convergence analysis. We introduce a new continuity concept called ‘supercalmness’ where arbitrarily small calmness constants can be obtained near the base point, which leads to essentially superlinear convergence results. We also explore partial supercalmness and use a well-known generalized derivative to characterize both when a multifunction is supercalm and when it is partially supercalm. To illustrate the value of such characterizations, we explore in detail a new example of a general primal sequential quadratic programming method for nonlinear programming and obtain verifiable conditions to ensure convergence at a superlinear rate. 相似文献
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关于函数一致连续的研究性教学 总被引:1,自引:0,他引:1
详细介绍函数一致连续的教学模式:先通过几何直观,使学生理解这一概念,随之引导学生认真学习一致连续在积分计算、函数项级数以及含参变量积分问题中的应用,使学生加深对这一概念的认识.同时就这一内容设置一系列探索性问题,进行研究性教学,以培养学生独立思考和解决问题的能力. 相似文献