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In this note we give an existence result to a class of variational inequalities associated with quasilinear elliptic operators of second order with lower order terms. We prove “a priori” estimate by an extension of the truncation method to the nonlinear case. 相似文献
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G. P. Crespi I. Ginchev M. Rocca 《Journal of Optimization Theory and Applications》2004,123(3):479-496
Let E be a linear space, let K
E and f:K . We formulate in terms of the lower Dini directional derivative problem GMVI (f
,K
), which can be considered as a generalization of MVI (f
,K
), the Minty variational inequality of differential type. We investigate, in the case of K star-shaped (SS), the existence of a solution x
* of GMVI (f
K
) and the property of f to increase-along-rays starting at x
*, fIAR (K,x
*). We prove that the GMVI (f
,K
) with radially l.s.c. function f has a solution x
* ker K if and only if fIAR (K,x
*). Further, we prove that the solution set of the GMVI (f
,K
) is a convex and radially closed subset of ker K. We show also that, if the GMVI (f
,K
) has a solution x
*K, then x
* is a global minimizer of the problem min f(x), xK. Moreover, we observe that the set of the global minimizers of the related optimization problem, its kernel, and the solution set of the variational inequality can be different. Finally, we prove that, in the case of a quasiconvex function f, these sets coincide. 相似文献
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摩擦约束弹性力学广义变分不等式解的存在性和唯一性 总被引:4,自引:0,他引:4
阐述了等价于摩擦约束弹性力学基本问题的广义变分不等式问题解的存在性和唯一性,进而提出广义变分不等式有限元近似及其离散解法。 相似文献
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本文在非常一般的框架下,建立了极大极小不等式,广义变分不等式和广义拟变分不等式,证明了解的存在定理,且它们是在非紧集上得到的,从而推广和改进了[3~13]中的相应结果. 相似文献
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By using the property of generalized f-projection operator and FKKM theorem, the existence theorem of solutions for the mixed variational inequality is proved under weaker assumption in reflexive and smooth Banach space. The results improve and extend the corresponding results shown recentlv. 相似文献
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Gap Functions and Existence of Solutions to Set-Valued Vector Variational Inequalities 总被引:3,自引:0,他引:3
The variational inequality problem with set-valued mappings is very useful in economics and nonsmooth optimization. In this paper, we study the existence of solutions and the formulation of solution methods for vector variational inequalities (VVI) with set-valued mappings. We introduce gap functions and establish necessary and sufficient conditions for the existence of a solution of the VVI. It is shown that the optimization problem formulated by using gap functions can be transformed into a semi-infinite programming problem. We investigate also the existence of a solution for the generalized VVI with a set-valued mapping by virtue of the existence of a solution of the VVI with a single-valued function and a continuous selection theorem. 相似文献
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Boundedness of Solutions for Elliptic Variational InequalitiesBoundednessofSolutionsforEllipticVariationalInequalities¥YeRuif... 相似文献
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Thispaperiscontinuationsof[1],westilltousemarksandtermsin[1]andtheothertermsagreewith[2]and[3].LetEandFbetwoHausdorfftopologicalvectorspaces,XE,YFbetwononemptysets,FbethedualspaceofF,A:X→2YandB:Y→2Fbetwoset-valuedmapping,T:Y→Xbeinvertible.Inthisp… 相似文献
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Gwinner变分不等式和隐变分不等式 总被引:2,自引:0,他引:2
本文在研究Gwinner变分不等式的基础上,利用新的集值映象不动点定理,探讨一类具广泛意义的隐变分不等式问题,改进了迄今相关结果中对紧性条件的要求,在非紧设置下获得了解的存在性定理. 相似文献
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Q. H. Ansari Z. Khan A. H. Siddiqi 《Journal of Optimization Theory and Applications》2005,127(2):263-283
In this paper, we introduce weighted variational inequalities over product of sets and system of weighted variational inequalities.
It is noted that the weighted variational inequality problem over product of sets and the problem of system of weighted variational
inequalities are equivalent. We give a relationship between system of weighted variational inequalities and systems of vector
variational inequalities. We define several kinds of weighted monotonicities and establish several existence results for the
solution of the above-mentioned problems under these weighted monotonicities. We introduce also the weighted generalized variational
inequalities over product of sets, that is, weighted variational inequalities for multivalued maps and systems of weighted
generalized variational inequalities. Extensions of weighted monotonicities for multivalued maps are also considered. The
existence of a solution of weighted generalized variational inequalities over product of sets is also studied. The existence
results for a solution of weighted generalized variational inequality problem give also the existence of solutions of systems
of generalized vector variational inequalities.
The first and third author express their thanks to the Department of Mathematical Sciences, King Fahd University of Petroleum
and Minerals, Dhahran, Saudi Arabia for providing excellent research facilities. The authors are also grateful to the referees
for comments and suggestions improving the final draft of this paper. 相似文献
15.
一般多值混合隐拟变分不等式的解的存在性与算法 总被引:3,自引:0,他引:3
引入了实Hilbert空间中一类新的一般多值混合隐拟变分不等式.它概括了丁协平教授引入与研究过的熟知的广义混合隐拟变分不等式类成特例.运用辅助变分原理技巧来解这类一般多值混合隐拟变分不等式.首先,定义了具真凸下半连续的二元泛函的新的辅助变分不等式,并选取了一适当的泛函,使得其唯一的最小值点等价于此辅助变分不等式的解.其次,利用此辅助变分不等式,构造了用于计算一般多值混合隐拟变分不等式逼近解的新的迭代算法.在此,等价性保证了算法能够生成一列逼近解.最后,证明了一般多值混合隐拟变分不等式解的存在性与逼近解的收敛性.而且,给算法提供了新的收敛判据.因此,结果对M.A.Noor提出的公开问题给出了一个肯定答案,并推广和改进了关于各种变分不等式与补问题的早期与最近的结果,包括最近文献中涉及单值与集值映象的有关混合变分不等式、混合拟变不等式与拟补问题的相应结果. 相似文献
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In this paper, we obtain two results of weak solutions to variational inequalities of triangular form under controllable growth and a class of natural growth conditions, i.e. 1^°. L^p-estimate for the gradient; 2^°. C^{1,β}_{loc}(Ω, R^N) regularity. 相似文献
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In this paper, we study a class of implicit vector variational inequalities which contain implicit variational inequalities and generalized quasivariational inequalities as special cases. By employing the Fan–Kakutani fixed-point theorem and the Oettli scalarization procedure, respectively, we establish several existence results for implicit vector variational inequalities. 相似文献
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S. Al-Homidan Q. H. Ansari S. Schaible 《Journal of Optimization Theory and Applications》2007,134(3):515-531
We consider five different types of systems of generalized vector variational inequalities and derive relationships among
them. We introduce the concept of pseudomonotonicity for a family of multivalued maps and prove the existence of weak solutions
of these problems under these pseudomonotonicity assumptions in the setting of Hausdorff topological vector spaces as well
as real Banach spaces. We also establish the existence of a strong solution of our problems under lower semicontinuity for
a family of multivalued maps involved in the formulation of the problems. By using a nonlinear scalar function, we introduce
gap functions for our problems by which we can solve systems of generalized vector variational inequalities using optimization
techniques.
The first two authors were supported by SABIC and Fast Track Research Grants SAB-2006-05. They are grateful to the Department
of Mathematical Sciences, King Fahd University of Petroleum and Minerals, Dhahran, Saudi Arabia for providing excellent research
facilities. 相似文献
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In this paper, we introduce and study a class of generalized vector quasivariational-like inequality problems, which includes generalized nonlinear vector variational inequality problems, generalized vector variational inequality problems and generalized vector variational-like inequality problems as special cases. We use the maximal element theorem with an escaping sequence to prove the existence results of a solution for generalized vector quasi-variational-like inequalities without any monotonicity conditions in the setting of locally convex topological vector space. 相似文献
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《Optimization》2012,61(4):401-412
The aim of this article is to study the relationship between generalized Minty vector variational inequalities and non-smooth vector optimization problems. Under pseudoconvexity or pseudomonotonicity, we establish the relationship between an efficient solution of a non-smooth vector optimization problem and a generalized Minty vector variational inequality. This offers a non-smooth version of existing Minty variational principle. 相似文献