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Fixed Point of a Countable Family of Uniformly Totally Quasi- <i>&Oslash</i>-Asymptotically Nonexpansive Multi-Valued Mappings in Reflexive Banach Spaces with Applications 被引量:1
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作者 Yi Li 《Applied Mathematics》 2013年第9期6-12,共7页
The purpose of this article is to discuss a modified Halpern-type iteration algorithm for a countable family of uniformly totally quasi- ? -asymptotically nonexpansive multi-valued mappings and establish some strong c... The purpose of this article is to discuss a modified Halpern-type iteration algorithm for a countable family of uniformly totally quasi- ? -asymptotically nonexpansive multi-valued mappings and establish some strong convergence theorems under certain conditions. We utilize the theorems to study a modified Halpern-type iterative algorithm for a system of equilibrium problems. The results improve and extend the corresponding results of Chang et al. (Applied Mathematics and Computation, 218, 6489-6497). 展开更多
关键词 multi-valued mapping Totally Quasi- Ø -Asymptotically NONEXPANSIVE Countable FAMILY of UNIFORMLY Totally Quasi- Ø -Asymptotically NONEXPANSIVE multi-valued mappings Firmly Convergence
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The Uniform Convergence Topology On Multi-valued Mapping Space
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作者 辛玉梅 谢鸿政 《Journal of Harbin Institute of Technology(New Series)》 EI CAS 1996年第2期1-5,共5页
Some convergences of topology are discussed. The definitions of almost uniform convergence topology and compatible topology are given. It is shown that the quasiuniform convergence and generalized uniform convergence ... Some convergences of topology are discussed. The definitions of almost uniform convergence topology and compatible topology are given. It is shown that the quasiuniform convergence and generalized uniform convergence have no compatible topology,but the almost uniform convergence has compatible topology. Moreover, the description of all uniform convergence limits and their mutual relation are investigated[1]. 展开更多
关键词 ss: TOPOLOGICAL SPACE multi-valued mapping limit-cluster line
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On the (<i>r</i>,<i>φ</i>,<i>ψ</i>)-Suzuki Contraction for the Multi-Valued Mappings
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作者 Zamir Selko 《Journal of Applied Mathematics and Physics》 2021年第2期211-219,共9页
In this work we try to give a new contraction type in multi-valued mapping on complete metric spaces. We prove the existence of fixed point for (<i>r</i>,<i>φ</i>,<i>ψ</i>)-Suzuki... In this work we try to give a new contraction type in multi-valued mapping on complete metric spaces. We prove the existence of fixed point for (<i>r</i>,<i>φ</i>,<i>ψ</i>)-Suzuki contraction in such spaces. Around our paper, the function <i>ψ</i> is absolutely continuous, and in this case, the contraction proposed by as has a fixed point. 展开更多
关键词 Suzuki-Contraction multi-valued mappings Fixed Point Theorem Absolutely Continuous Functions
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COMMON FIXED POINT THEOREMS FOR MULTI-VALUED MAPS
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作者 Boško Damjanovic Bessem Samet Calogero Vetro 《Acta Mathematica Scientia》 SCIE CSCD 2012年第2期818-824,共7页
We establish some results on coincidence and common fixed points for a twopair of multi-valued and single-valued maps in complete metric spaces. Presented theorems generalize recent results of Gordji et al [4] and sev... We establish some results on coincidence and common fixed points for a twopair of multi-valued and single-valued maps in complete metric spaces. Presented theorems generalize recent results of Gordji et al [4] and several results existing in the literature. 展开更多
关键词 Coincidence point common fixed point multi-valued maps
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ALGORITHMS FOR A SYSTEM OF GENERALIZED MIXED EQUILIBRIUM PROBLEMS AND A COUNTABLE FAMILY OF SOME NONLINEAR MULTI-VALUED NONEXPANSIVE-TYPE MAPS
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作者 Ogonnaya Michael ROMANUS Ukamaka Victoria NNYABA Monday Ogudu NNAKWE 《Acta Mathematica Scientia》 SCIE CSCD 2018年第6期1805-1820,共16页
In this paper, relaxed iterative algorithms of Krasnoselskii-type and Halpern-type that approximate a solution of a system of a generalized mixed equilibrium problem anda common fixed point of a countable family of to... In this paper, relaxed iterative algorithms of Krasnoselskii-type and Halpern-type that approximate a solution of a system of a generalized mixed equilibrium problem anda common fixed point of a countable family of totally quasi-C-asymptotically nonexpansivemulti-valued maps are constructed. Strong convergence of the sequence generated by thesealgorithms is proved in uniformly smooth and strictly convex real Banach spaces with Kadec-Klee property. Furthermore, several applications of our theorems are also presented. Finally,our theorems are significant improvements on several important recent results for this classof nonlinear problems. 展开更多
关键词 Halpern-type algorithm Krasnoselskii-type algorithm system of generalizedmixed equilibrium problems totally quasi-C-asymptotically nonexpansive multi-valued maps equally continuous maps
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Common Fixed Point Theorems of Multi-Valued Maps in Ultra Metric Space
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作者 Qiulin Wang Meimei Song 《Applied Mathematics》 2013年第2期417-420,共4页
We establish some results on coincidence and common fixed point for a two pair of multi-valued and single-valued maps in ultra metric spaces.
关键词 multi-valued maps COINCIDENCE POINT Common Fixed POINT
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Common Fixed Point Result of Multivalued and Singlevalued Mappings in Partially Ordered Metric Space 被引量:1
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作者 Rajesh Kumar Saini Archana Sharma 《Advances in Pure Mathematics》 2013年第1期142-148,共7页
In recent times the fixed point results in partially ordered metric spaces has greatly developed. In this paper we prove common fixed point results for multivalued and singlevalued mappings in partially ordered metric... In recent times the fixed point results in partially ordered metric spaces has greatly developed. In this paper we prove common fixed point results for multivalued and singlevalued mappings in partially ordered metric space. Our theorems generalized the theorem in [1] and extends the many more recent results in such spaces. 展开更多
关键词 multi-valued mapping Single-Valued mapping Partial ORDERING Control Function Fixed Point Theorem
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Non-expansive Mappings and Iterative Methods in Uniformly Convex Banach Spaces 被引量:6
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作者 Ha|YunZHOU 《Acta Mathematica Sinica,English Series》 SCIE CSCD 2004年第5期829-836,共8页
In this article,we will investigate the properties of iterative sequence for non-expansive mappings and present several strong and weak convergence results of successive approximations to fixed points of non-expansive... In this article,we will investigate the properties of iterative sequence for non-expansive mappings and present several strong and weak convergence results of successive approximations to fixed points of non-expansive mappings in uniformly convex Banach spaces.The results presented in this article generalize and improve various ones concerned with constructive techniques for the fixed points of non-expansive mappings. 展开更多
关键词 non-expansive mapping Mann and lshikawa iteration schemes Convergence theorem Uniformly convex Banach space
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Fixed Points for Mean Non-expansive Mappings
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作者 Chun-xue Wu Li-juan Zhang 《Acta Mathematicae Applicatae Sinica》 SCIE CSCD 2007年第3期489-494,共6页
For a Banach Space X Garcia-Falset introduced the coefficient R(X) and showed that if R(X) 〈 2 then X has a fixed point. In this paper, we define a mean non-expansive mapping T on X in the sense that ||Tx - TY... For a Banach Space X Garcia-Falset introduced the coefficient R(X) and showed that if R(X) 〈 2 then X has a fixed point. In this paper, we define a mean non-expansive mapping T on X in the sense that ||Tx - TY|| ≤ a||x - y|| + b||x - Ty|| for any x,y E X, where a,b ≥ 0, a + b ≤ 1. We show that if R(X) 〈 1/1+b then T has a fixed point in X. 展开更多
关键词 Fixed point property mean non-expansive mapping normal structure
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Weak and Strong Convergence for Fixed Points of Asymptotically Non-expansive Mappings
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作者 Ze Qing LIU Shin Min KANG 《Acta Mathematica Sinica,English Series》 SCIE CSCD 2004年第6期1009-1018,共10页
A few weak and strong convergence theorems of the modified three-step iterative sequence with errors and the modified Ishikawa iterative sequence with errors for asymptotically non-expansive mappings in any non-empty ... A few weak and strong convergence theorems of the modified three-step iterative sequence with errors and the modified Ishikawa iterative sequence with errors for asymptotically non-expansive mappings in any non-empty closed convex subsets of uniformly convex Banach spaces are established. The results presented in this paper substantially extend the results due to Chang (2001), Osilike and Aniagbosor (2000), Rhoades (1994) and Schu (1991). 展开更多
关键词 Asymptotically non-expansive mapping Fixed point Modified three-step iterative sequence with errors Modified Ishikawa iterative sequence with errors Uniformly convex Banach space Opial’s condition Weak convergence Strong convergence
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Stability of Periodic Orbits and Return Trajectories of Continuous Multi-valued Maps on Intervals
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作者 Tai Xiang SUN Fan Ping ZENG +1 位作者 Guang Wang SU Bin QIN 《Acta Mathematica Sinica,English Series》 SCIE CSCD 2018年第7期1121-1130,共10页
Let I be a compact interval of real axis R, and (L, H) be the metric space of all nonempty closed subintervals of I with the Hausdorff metric H and f : I →L be a continuous multi-valued map. Assume that Pn = (x0,... Let I be a compact interval of real axis R, and (L, H) be the metric space of all nonempty closed subintervals of I with the Hausdorff metric H and f : I →L be a continuous multi-valued map. Assume that Pn = (x0, x1,..., xn) is a return trajectory of f and that p ∈ [min Pn, max Pn] with p ∈ f(p). In this paper, we show that if there exist k (≥ 1) centripetal point pairs of f (relative to p) in {(xi;xi+l) : 0 ≤ i ≤ n- 1} and n =sk+r (0 ≤ r ≤ k - 1), then f has an R-periodic orbit, where R=s+1 ifsiseven, and R =s if s is odd and r = 0, and R=s+2 if s is odd and r 〉0. Besides, we also study stability of periodic orbits of continuous multi-valued maps from I to L. 展开更多
关键词 Continuous multi-valued map periodic orbit STABILITY
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Algorithms of common solutions to quasi variational inclusion and fixed point problems 被引量:2
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作者 张石生 李向荣 陈志坚 《Applied Mathematics and Mechanics(English Edition)》 SCIE EI 2008年第5期571-581,共11页
The purpose of this paper is to present an iterative scheme for finding a common element of the set of solutions to the variational inclusion problem with multivalued maximal monotone mapping and inverse-strongly mono... The purpose of this paper is to present an iterative scheme for finding a common element of the set of solutions to the variational inclusion problem with multivalued maximal monotone mapping and inverse-strongly monotone mappings and the set of fixed points of nonexpansive mappings in Hilbert space.Under suitable conditions, some strong convergence theorems for approximating this common elements are proved. The results presented in the paper not only improve and extend the main results in Korpelevich(Ekonomika i Matematicheskie Metody,1976,12(4):747-756),but also extend and replenish the corresponding results obtained by Iiduka and Takahashi(Nonlinear Anal TMA,2005,61(3):341-350),Takahashi and Toyoda(J Optim Theory Appl,2003, 118(2):417-428),Nadezhkina and Takahashi(J Optim Theory Appl,2006,128(1):191- 201),and Zeng and Yao(Taiwan Residents Journal of Mathematics,2006,10(5):1293-1303). 展开更多
关键词 variational inclusion multi-valued maximal monotone mapping inversestrongly monotone mapping metric projection fixed point nonexpansive mapping
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Folded Solitary Wave Excitations for(2+1)-Dimensional Nizhnik-Novikov-Veselov System 被引量:2
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作者 MA Song-Hua FANG Jian-Ping LU Zhi-Jie 《Communications in Theoretical Physics》 SCIE CAS CSCD 2009年第3期479-484,共6页
With the help of an improved mapping approach and a linear-variable-separation approach, a new family of exact solutions with arbitrary functions of the (2+1)-dimensional Nizhnik-Novikov-Veselov system (NNV) is d... With the help of an improved mapping approach and a linear-variable-separation approach, a new family of exact solutions with arbitrary functions of the (2+1)-dimensional Nizhnik-Novikov-Veselov system (NNV) is derived. Based on the derived solutions and using some multi-valued functions, we find a few new folded solitary wave excitations for the (2+1)-dimensional NNV system. 展开更多
关键词 (2+1)-dimensional NNV system improved mapping approach~ multi-valued functions folded solitary wave excitations
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Viscosity method for hierarchical fixed point and variational inequalities with applications 被引量:1
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作者 张石生 王雄瑞 +1 位作者 H.W.J.LEE 陈志坚 《Applied Mathematics and Mechanics(English Edition)》 SCIE EI 2011年第2期241-250,共10页
A viscosity method for a hierarchical fixed point solving variational inequality problems is presented. The method is used to solve variational inequalities, where the involved mappings are non-expansive. Solutions ar... A viscosity method for a hierarchical fixed point solving variational inequality problems is presented. The method is used to solve variational inequalities, where the involved mappings are non-expansive. Solutions are sought in the set of the fixed points of another non-expansive mapping. As applications, we use the results to study problems of the monotone variational inequality, the convex programming, the hierarchical minimization, and the quadratic minimization over fixed point sets. 展开更多
关键词 hierarchical fixed point non-expansive mapping fixed point viscosity approximation hierarchical minimization
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Quadratic minimization for equilibrium problem variational inclusion and fixed point problem
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作者 张石生 李向荣 陈志坚 《Applied Mathematics and Mechanics(English Edition)》 SCIE EI 2010年第7期917-928,共12页
The purpose of this paper is to find the solutions to the quadratic mini- mization problem by using the resolvent approach. Under suitable conditions, some new strong convergence theorems are proved for approximating ... The purpose of this paper is to find the solutions to the quadratic mini- mization problem by using the resolvent approach. Under suitable conditions, some new strong convergence theorems are proved for approximating a solution of the above min- imization problem. The results presented in the paper extend and improve some recent results. 展开更多
关键词 quadratic minimization generalized equilibrium fixed point variational inclusion multi-valued maximal monotone mapping inverse-strongly monotone mapping resolvent operator nonexpansive mapping
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SOME RESULTS ON BEST APPROXIMATION IN SPACES WITH CONVEX STRUCTURE
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作者 T. D. Narang 《Analysis in Theory and Applications》 2008年第1期67-73,共7页
Some generalizations of the result proved by S.P. Singh [J. Approx. Theory 25(1979), 89-90] are presented in convex metric spaces. The results proved contain several known results on the subject.
关键词 convex metric space convex set starshaped set non-expansive map affinemap
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IMPULSIVE BOUNDARY VALUE PROBLEMS FOR STURM-LIOUVILLE TYPE DIFFERENTIAL INCLUSIONS 被引量:2
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作者 Yicheng LIU Jun WU Zhixiang LI 《Journal of Systems Science & Complexity》 SCIE EI CSCD 2007年第3期370-380,共11页
In this paper, the authors investigate the existence of solutions of impulsive boundary value problems for Sturm-Liouville type differential inclusions which admit non-convex-valued multifunctions on right hand side. ... In this paper, the authors investigate the existence of solutions of impulsive boundary value problems for Sturm-Liouville type differential inclusions which admit non-convex-valued multifunctions on right hand side. Two results under weaker conditions are presented. The methods rely on a fixed point theorem for contraction multi-valued maps due to Covitz and Nadler and Schaefer's fixed point theorem combined with lower semi-continuous multi-valued operators with decomposable values. 展开更多
关键词 Boundary value problems contraction multi-valued map impulsive differential inclusions measurable selection.
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Impulsive Boundary Value Problems for First-order Ordinary Differential Inclusions
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作者 Yi-cheng Liu Jun Wu Zhi-xiang Li 《Acta Mathematicae Applicatae Sinica》 SCIE CSCD 2007年第3期411-420,共10页
In this paper, we investigate the existence of solutions for impulsive first order ordinary differential inclusions which admitting nonconvex valued right hand side. We present two classes of results. In the first one... In this paper, we investigate the existence of solutions for impulsive first order ordinary differential inclusions which admitting nonconvex valued right hand side. We present two classes of results. In the first one, we rely on a fixed point theorem for contraction multivalued maps due to Covitz and Nadler, and for the second one, we use Schacfer's fixed point theorem combined with lower semi-continuous multivalued operators with decomposable values under weaker conditions. 展开更多
关键词 Impulsive differential inclusions measurable selection contraction multi-valued map boundaryvalue problems
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