共查询到19条相似文献,搜索用时 93 毫秒
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李志龙 《数学物理学报(A辑)》2010,30(2):542-547
该文利用半序理论和随机压缩映象原理,得到了一类不连续随机增算子随机不动点的唯一存在定理.作为应用,考虑了R~n中含间断项的一阶随机微分积分方程初值问题. 相似文献
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在完备可分的半序度量空间中,引入了随机映射对(F,G)关于g随机半序弱增以及(F,G)随机半序弱增的定义,研究了在满足一定非线性压缩条件下的随机映射列F_k:Ω×X×X→X,k=1,2…,g:Ω×X→X和h:Ω×X→X的公共二元随机重合点与公共二元随机不动点问题,所得结果推广了已有文献中的一些不动点定理. 相似文献
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本文在完备可分的半序度量空间中,引入随机映射对F∶Ω×X×X×X→X与g∶Ω×X→X的随机g-混合单调性质以及随机可交换性质的定义,研究该映射对满足不同压缩条件下的三元随机重合点与三元随机不动点问题,所得结果推广已有文献中的一些随机不动点定理. 相似文献
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一个一般的多值随机算子的随机不动点定理 总被引:1,自引:0,他引:1
近年来,由于理论和应用上的需要,随机不动点定理的研究获得了很大进展.许多重要的不动点定理的随机类比已相继得到证明。本文的定理2.1是一个一般的随机不动点定理,它推广了重要的 Chuong 的结果.利用这个定理,结合非随机不动点定理立即可以得到许多非随机不动点定理的随机类比.例如,[1,2,4,6]中的结果都是本定理的特例。 相似文献
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本文利用随机拓扑度理论研究全连续随机算子的不动点问题,得到若干仅依赖于边界条件的随机不动点定理.作为特例,也给出了相应的确定性算子的边界不动点定理. 相似文献
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本文利用Zorn引理和锥理论,研究了不连续随机算子的随机不动点的存在性问题,得到了几个有关不连续随机增算子的随机不动点定理. 相似文献
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朱传喜 《应用泛函分析学报》2011,13(3):285-291
研究了新的随机不动点指数的计算问题,利用随机不动点指数的理论推广了著名的Amann定理.提出了随机算子的随机渐进歧点的新概念,并且研究了随机k(ω)-集压缩算子的随机渐进歧点的一些问题,也得到了若干新的结果. 相似文献
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在Banach空间中利用一个随机Mann迭代序列组,讨论了随机映射的随机不动点的存在性问题,得出了几个随机不动点定理,改进了相关文献中的相应结果. 相似文献
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Naseer Shahzad 《Journal of Mathematical Analysis and Applications》2004,296(1):302-308
The paper presents new random fixed point results for pseudo-contractive random operators. 相似文献
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本文引进了随机广义内向映射的随机不动点指数,利用该不动点指数我们得到了一些新的随机不动点定理,并给出了其一个应用. 相似文献
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Abstract Let (X, ≤) be a partially ordered set and suppose there is a metric d on X such that (X, d) is a complete separable metric space and (Ω, Σ) be a measurable space. In this article a pair of random mappings F: Ω × (X × X) → X and g: Ω × X → X, where F has a mixed g-monotone property on X, and F and g satisfy the non-linear contractive condition (5) below, are introduced and investigated. Two coupled random coincidence and coupled random fixed point theorems are proved. These results are random versions and extensions of recent results of Lakshmikantham and ?iri? [V. Lakshmikantham and Lj. ?iri?, Coupled fixed point theorems for nonlinear contractions in partially ordered metric spaces. Nonlinear Anal.—Theor. 70(12) (2009): 4341–4349] and include several recent developments. 相似文献
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《随机分析与应用》2013,31(1):69-77
Abstract The purpose of this paper is to construct a random Ishikawa iterative sequence for random strongly pseudo-contractive operator T in separable Banach spaces and to study that under suitable conditions this random iterative sequence converges to a random fixed point to T. 相似文献
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We construct random iterative processes for weakly contractive and asymptotically nonexpansive random operators and study necessary conditions for the convergence of these processes. It is shown that they converge to the random fixed points of these operators in the setting of Banach spaces. We also proved that an implicit random iterative process converges to the common random fixed point of a finite family of asymptotically quasi-nonexpansive random operators in uniformly convex Banach spaces. 相似文献
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Weicai Peng Weiguo Yang Bei Wang 《Journal of Mathematical Analysis and Applications》2010,361(2):293-301
By constructing a non-negative martingale on a homogeneous tree, a class of small deviation theorems for functionals of random fields, the strong law of large numbers for the frequencies of occurrence of states and ordered couple of states for random fields, and the asymptotic equipartition property (AEP) for finite random fields are established. As corollary, the strong law of large numbers and the AEP for Markov chains indexed by a Cayley tree is obtained. Some known results are generalized in this paper. 相似文献
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《随机分析与应用》2013,31(1):155-167
Abstract We proved a random coincidence point theorem for a pair of commuting random operators in the setup of Fréchet spaces. As applications, we obtained random fixed point and best approximation results for *-nonexpansive multivalued maps. Our results are generalizations or stochastic versions of the corresponding results of Shahzad and Latif [Shahzad, N.; Latif, A. A random coincidence point theorem. J. Math. Anal. Appl. 2000, 245, 633–638], Khan and Hussain [Khan, A.R.; Hussain, N. Best approximation and fixed point results. Indian J. Pure Appl. Math. 2000, 31 (8), 983–987], Tan and Yaun [Tan, K.K.; Yaun, X.Z. Random fixed point theorems and approximation. Stoch. Anal. Appl. 1997, 15 (1), 103–123] and Xu [Xu, H.K. On weakly nonexpansive and *-nonexpansive multivalued mappings. Math. Japon. 1991, 36 (3), 441–445]. 相似文献
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随机1-集压缩算子的随机不动点指数和随机不动点定理 总被引:24,自引:0,他引:24
在[1]中我们建立了随机拓扑度并得到系列新的随机不动点定理,本文建立了随机1-集压缩算子的随机不动点指数理论,得到一些新的随机不动点定理,为研究各类随机方程提供一些存在性原理,给出了在随机Hammerstein积分方程的应用. 相似文献