共查询到19条相似文献,搜索用时 315 毫秒
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概率度量空间的基本理论及应用(Ⅰ)* 总被引:9,自引:2,他引:7
本文系统地研究概率度量空间的基本理论和应用,讨论了概率度量空间的拓扑结构和性质;给出了概率度量空间,Menger概率度量空间以及概率线性赋范空间可度量化的条件及其度量函数的形式:得出了概率度量空间集合的各种概率有界性的表征等.作为这些结果的应用,我们讨论了概率线性赋范空间中线性算子的理论及概率度量空间中不动点的存在性问题. 相似文献
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在已有文献结果的基础上,利用模糊度量空间理论,给出了序模糊度量空间中的一些公共不动点定理.这些定理不要求模糊度量空间具有完备性,推广和改进了相关文献的相应结果. 相似文献
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本文证明锥b-度量空间中关于扩张映射的一些不动点定理,没有考虑映射的连续性和锥的正规性.其结果不仅推广了锥度量空间,度量空间和b-度量空间中的相关结果,而且也延拓和补充了先前的一些结果.此外,我们给出几个例子验证了其结论. 相似文献
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《数学的实践与认识》2020,(10)
根据度量空间中极限点和链等价点的定义,给出度量G-空间中G-极限点和G-链等价点的概念,并在度量G-空间中研究了它们的动力学性质,得到了G-极限点和G-链等价点的一些结果,这些结果丰富了度量G-空间中G-极限点和G-链等价点的理论. 相似文献
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本文给出Fuzzy度量空间一些扩张型映象的不动点定理,这些结果发展和改进了普通度量空间中相应的结果。 相似文献
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本文研究了广义度量空间(A)型和(B)型弱F压缩的问题.利用迭代的方法,获得了在完备广义度量空间关于这些映射的不动点定理的结果,推广了完备度量空间F压缩的一些结果. 相似文献
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本文利用一致覆盖的概念,讨论了度量空间的序列覆盖紧映象的结构.主要结果有: (1)空间X是局部可分度量空间的序列覆盖紧映象当且仅当X具有由cosmic子空间构成的一致sn网; (2)空间X是局部可分度量空间的序列覆盖,商紧映象当且仅当X是度量空间的序列覆盖,商紧映象且是局部cosmic空间. 相似文献
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A note on cone metric fixed point theory and its equivalence 总被引:1,自引:0,他引:1
Wei-Shih Du 《Nonlinear Analysis: Theory, Methods & Applications》2010,72(5):2259-2261
The main aim of this paper is to investigate the equivalence of vectorial versions of fixed point theorems in generalized cone metric spaces and scalar versions of fixed point theorems in (general) metric spaces (in usual sense). We show that the Banach contraction principles in general metric spaces and in TVS-cone metric spaces are equivalent. Our theorems also extend some results in Huang and Zhang (2007) [L.-G. Huang, X. Zhang, Cone metric spaces and fixed point theorems of contractive mappings, J. Math. Anal. Appl. 332 (2007) 1468-1476], Rezapour and Hamlbarani (2008) [Sh. Rezapour, R. Hamlbarani, Some notes on the paper Cone metric spaces and fixed point theorems of contractive mappings, J. Math. Anal. Appl. 345 (2008) 719-724] and others. 相似文献
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给出了G-锥度量空间的概念,利用迭代法探究了G-锥度量空间中压缩映射不动点定理,证明了在G-锥度量空间中锥没有正规性的条件下压缩映射存在唯一不动点. 相似文献
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Fixed point theorems for operators of a certain type on partial metric spaces are given. Orbitally continuous operators on partial metric spaces and orbitally complete partial metric spaces are defined, and fixed point theorems for these operators are given. 相似文献
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The aim of this paper is to prove some common fixed point theorems for finite number of discontinuous, noncompatible mappings on noncomplete fuzzy metric spaces. We improve extend and generalize several fixed point theorems on metric spaces,uniform spaces and fuzzy metric spaces.We also give formulas for total number of commutativity conditions for finite number of mappings. 相似文献
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Dynamic processes and fixed points of set-valued nonlinear contractions in cone metric spaces 总被引:1,自引:0,他引:1
Investigations concerning the existence of dynamic processes convergent to fixed points of set-valued nonlinear contractions in cone metric spaces are initiated. The conditions guaranteeing the existence and uniqueness of fixed points of such contractions are established. Our theorems generalize recent results obtained by Huang and Zhang [L.-G. Huang, X. Zhang, Cone metric spaces and fixed point theorems of contractive maps, J. Math. Anal. Appl. 332 (2007) 1467–1475] for cone metric spaces and by Klim and Wardowski [D. Klim, D. Wardowski, Fixed point theorems for set-valued contractions in complete metric spaces, J. Math. Anal. Appl. 334 (1) (2007) 132–139] for metric spaces. The examples and remarks provided show an essential difference between our results and those mentioned above. 相似文献
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概率度量空间与映象的不动点定理 总被引:1,自引:0,他引:1
概率度量空间的概念首先由Menger[7]提出,以后许多人对这一空间的理论和应用曾进行过某些讨论(见[1-9])。本文的目的是进一步研究这一空间中映象的不动点定理。在本文的§2中,我们得出了一些新型的不动点定理,这些结果改进和加强了引文[2,3,8]中某些主要结果。 相似文献
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Huang and Zhang [L.-G. Haung, X. Zhang, Cone metric spaces and fixed point theorems of contractive mappings, J. Math. Anal. Appl. 332 (2007) 1468–1476] proved some fixed point theorems in cone metric spaces. In this work we prove some fixed point theorems in cone metric spaces, including results which generalize those from Haung and Zhang’s work. Given the fact that, in a cone, one has only a partial ordering, it is doubtful that their Theorem 2.1 can be further generalized. We also show that these maps have no nontrivial periodic points. 相似文献
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A.P. Farajzadeh A. Amini-Harandi D. Baleanu 《Communications in Nonlinear Science & Numerical Simulation》2012,17(2):708-712
In this paper, we prove some fixed point theorems for generalized contractions in cone metric spaces. Our theorems extend some results of Suzuki (2008) [T. Suzuki, A generalized Banach contraction principle that characterizes metric completeness, Proc Amer Math Soc 136(5) (2008), 1861-1869] and Kikkawa and Suzuki (2008) [M. Kikkawa and T. Suzuki, Three fixed point theorems for generalized contractions with constants in complete metric spaces, Nonlinear Anal 69(9) (2008), 2942-2949]. 相似文献