نتایج جستجو برای: multivalued map

تعداد نتایج: 197154  

2014
Alemayehu Geremew Negash

We prove the weak convergence of Mann iteration for a hybrid pair of maps to a common fixed point of a selfmap f and a multivalued f nonexpansive mapping T in Banach space E. Keywords—Common fixed point, Mann iteration, Multivalued mapping, weak convergence.

Journal: :Computers & Mathematics with Applications 2008
Ismat Beg Mujahid Abbas

We investigate the convergence of measurable selectors for the limit of measurable multivalued maps. The relationship between the convergence of measurable selectors and lower and upper limits of measurable multivalued mappings with closed images is also derived. c © 2007 Elsevier Ltd. All rights reserved.

Journal: :Mediterranean Journal of Mathematics 2021

Abstract Multivalued $$*$$ ∗ -nonexpansive mappings are studied in Banach spaces. The demiclosedness principle is established. Here we focus on the problem of solving a variational inequality which defined set fixed points multivalued mapping. For this purpose, introduce tw...

2014
Jingling Zhang Yongfu Su Qingqing Cheng Yonghong Yao

and Applied Analysis 3 Remark 1.1. If E is a reflexive strictly convex and smooth Banach space, then for x, y ∈ E, φ x, y 0 if and only if x y. It is sufficient to show that if φ x, y 0 then x y. From 1.6 , we have ‖x‖ ‖y‖. This implies 〈x, Jy〉 ‖x‖2 ‖Jy‖2. From the definitions of j, we have Jx Jy, that is, x y, see 8, 9 for more details. Let C be a nonempty closed convex subset of a smooth Bana...

Journal: :international journal of nonlinear analysis and applications 0
konrawut khammahawong king mongkut's university of technology thonburi (kmutt), 126 pracha-uthit road, bang mod, thrung khru, bangkok 10140, thailand parinya sa ngiamsunthorn department of mathematics, faculty of science, king mongkut’s university of technology thonburi (kmutt), 126 pracha-uthit road, bang mod, thrung khru, bangkok 10140, thailand. poom kumam king mongkut's university of technology thonburi (kmutt), 126 pracha-uthit road, bang mod, thrung khru, bangkok 10140, thailand

in this paper, we establish and prove the existence of best proximity points for multivalued cyclic $f$- contraction mappings in complete metric spaces. our results improve and extend various results in literature.

Journal: :Inf. Process. Lett. 1986
Yoshito Hanatani Ronald Fagin

Functional dependencies [4] and multivalued dependencies [5,11] are important, widely-studied constraints on databases. A fundamental issue in database theory is the question of determining whether or not a given set of dependencies (in our case, functional and multivalued dependencies) logically implies another given dependency. We provide a simple and elegant set-theoretic characterization fo...

2005
Jixue Liu Millist W. Vincent Chengfei Liu Mukesh K. Mohania

Recently, the issues of how to define functional dependencies (XFDs) and multivalued dependencies (XMVDs) in XML have been investigated. In this paper we consider the problem of checking the satisfaction of a set of XMVDs in an XML document. We present an algorithm using extensible hashing to check whether an XML document satisfies a given set of XMVDs. The performance of the algorithm is shown...

Journal: :Bulletin of the Polish Academy of Sciences Mathematics 2004

In this paper, we introduce a one-step iterative scheme for finding a common fixed point of a finite family of multivalued quasi-nonexpansive mappings in a real uniformly convex Banach space. We establish weak and strong convergence theorems of the propose iterative scheme under some appropriate conditions.

Journal: :MATHEMATICA SCANDINAVICA 1993

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