共查询到20条相似文献,搜索用时 78 毫秒
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讨论了一类具集值映射的广义强向量拟均衡问题(GSVQEP)解的存在性.利用连续选择定理和不动点定理,在没有任何单调性假设下得到了GSVQEP解的存在性定理. 相似文献
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通过对偶的方法研究了拓扑向量空间上的一类平衡问题,并详细的证明了平衡问题解的存在性结果,又利用集值映射的拟凸性讨论了一类集值映射的平衡问题,并给出了详细的证明过程,得到其平衡问题的解的存在性结果. 相似文献
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研究一类积集上具某种权向量的广义向量变分不等式组及其广义向量变分不等式的有关问题,刻画它们之间解的相互关系.在映射的次连续性和关于某向量广义单调性的条件下,利用集值映射的不动点定理,对所讨论的几种类型的广义向量变分不等式给出解的存在性. 相似文献
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在拓扑向量空间中,利用Ky Fan截口定理得到一个锥凸向量拟均衡问题弱Pareto解的存在性结果.作为该结果的应用,得到了一个对称向量拟均衡问题在支付映射为锥凸条件下弱Pareto解的存在性定理.该定理在较弱的条件下回答了Fu在文献[1]中提出的第二个问题,即在支付映射为锥凸且连续的条件下对称向量拟均衡问题的弱Pareto解是否存在.最后在赋范线性空间中研究了锥凸对称向量拟均衡问题弱Pareto解集的通有稳定性. 相似文献
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研究锥伪单调、锥拟凸和上锥连续映射在某种强制性条件下的向量均衡问题解集的特征,建立强制性条件与向量均衡问题解集的关系,得到对偶向量均衡问题局部解集含于向量均衡问题解集的性质和向量均衡问题解集的非空性条件,给出在锥伪单调、锥拟凸和上锥连续映射条件下向量均衡问题解集的非空有界性与强制性条件的等价性. 相似文献
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《数学的实践与认识》2016,(23)
利用集值映射的自然拟C-凸性和集值映射的下(-C)-连续性的定义以及Kakutani-Fan-Glicksberg不动点定理,在不要求锥C的对偶锥C~*具有弱*紧基的情况下,建立了集值广义强向量拟均衡问题解的存在性定理.把相关文献中所得的关于单值映射解的存在性结果推广到了集值映射的情形. 相似文献
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研究在锥伪单调、锥拟凸、锥严格拟凸和次连续条件下几类二元向量平衡问题解的关系,利用KyFan不动点定理证明了解的存在性。 相似文献
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Aram Arutyunov Evgeniy Avakov Boris Gel’man Andrei Dmitruk Valeri Obukhovskii 《Journal of Fixed Point Theory and Applications》2009,5(1):105-127
We study the notion of α-covering map with respect to certain subsets in metric spaces. Generalizing results from [1] we use
this notion to give some coincidence theorems for pairs of single-valued and multivalued maps one of which is relatively α-covering
while the other satisfies the Lipschitz condition. These assertions extend some classical contraction map principles. We define
the notion of α-covering multimap at a point and give conditions under which the covering property of a multimap at each interior
point of a set implies that it is covering on the whole set. As applications we consider the solvability of a system of inclusions
and the existence of a positive trajectory for a semilinear feedback control system.
This paper is dedicated to Professor Felix Browder on the occasion of his jubilee 相似文献
12.
Sehie Park 《Nonlinear Analysis: Theory, Methods & Applications》2011,74(7):2439-2447
In the KKM theory, some authors adopt the concepts of the compact closure (ccl), compact interior (cint), transfer compactly closed-valued multimap, transfer compactly l.s.c. multimap, and transfer compactly local intersection property, respectively, instead of the closure, interior, closed-valued multimap, l.s.c. multimap, and possession of a finite open cover property. In this paper, we show that such adoption is inappropriate and artificial. In fact, any theorem with a term with “transfer” attached is equivalent to the corresponding one without “transfer”. Moreover, we can invalidate terms with “compactly” attached by giving a finer topology on the underlying space. In such ways, we obtain simpler formulations of KKM type theorems, Fan-Browder type fixed point theorems, and other results in the KKM theory on abstract convex spaces. 相似文献
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非紧的一般化凸空间上不动点定理和supinfsup不等式 总被引:1,自引:0,他引:1
利用一般化凸空间上的KKM型定理得到有限交定理,然后作为应用讨论了在没有紧性限制的一般化凸空间上集值映射的不动点的存在问题以及Von Neumann-Fan型supinfsup不等式(等式)问题,最后给出了极大极小等式. 相似文献
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The connection between transitivity and existence of a dense orbit for multifunctions $\phi \: X\multimap X$ in generalized topological spaces is studied. Moreover strongly transitive multifunctions and functions in generalized topological spaces are investigated. 相似文献
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局部FC-空间上的几乎不动点和不动点 总被引:1,自引:0,他引:1
朴勇杰 《应用泛函分析学报》2010,12(1):27-32
利用古典的KKM原理的开[闭]形式得到FC-空间上的KKM型定理并给出局部FC-空间上的上[下]半连续映射的几乎不动点定理,最后给出在局部FC-空间上具有闭值且其值为FC-子空间的上半连续映射的不动点定理. 相似文献
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Jan Andres Tomá s Fü rst Karel Pastor 《Proceedings of the American Mathematical Society》2007,135(10):3187-3191
We present an elementary proof that, for a multivalued map with nonempty connected values and monotone margins, the existence of a periodic orbit of any order implies the existence of periodic orbits of all orders. This generalizes a very recent result of this type in terms of scalar ordinary differential equations without uniqueness, due to F. Obersnel and P. Omari, obtained by means of lower and upper solutions techniques.
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得到局部G-凸一致空间上具有S-KKM性质的集值映射的新的几乎不动点定理和不动点定理.我们的结果对已有文献中的相应结论进行了改进和一般化. 相似文献
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The gain-loss model is a formal model for assessing learning processes. For the assessment to be trustworthy, the skill multimap associating the problems with the skills has to be specified in an appropriate way. In practical applications, however, more than one skill multimap could be plausible, while none corresponds to the true one. The article investigates whether constraining the error probabilities is a way of uncovering the best skill assignment among a number of alternatives. A simulation study shows that this approach allows the detection of the models that are closest to the correct one. 相似文献
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A. Amini-Harandi A.P. Farajzadeh 《Nonlinear Analysis: Theory, Methods & Applications》2009,71(11):5151-5156
Suppose X is a compact admissible subset of a hyperconvex metric spaces M, and suppose F:XM is a quasi-lower semicontinuous set-valued map whose values are nonempty admissible. Suppose also G:XX is a continuous, onto quasi-convex set-valued map with compact, admissible values. Then there exists an x0X such that As applications, we give some coincidence and fixed point results for weakly inward set-valued maps. Our results, generalize some well-known results in literature. 相似文献
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In this paper, a better admissible class B+ is introduced and a new fixed point theorem for better admissible multimap is proved on abstract convex spaces. As a consequence, we deduce a new fixed point theorem on abstract convex Φ-spaces. Our main results generalize some recent work due to Lassonde, Kakutani, Browder, and Park. 相似文献