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    Best approximation and fixed-point theorems for discontinuous increasing maps in Banach lattices

    199312_117684_1687-1812-2014-18.pdf (230.2Kb)
    Access Status
    Open access
    Authors
    Kong, D.
    Liu, L.
    Wu, Yong Hong
    Date
    2014
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Kong, D. and Liu, L. and Wu, Y.H. 2014. Best approximation and fixed-point theorems for discontinuous increasing maps in Banach lattices. Fixed Point Theory and Applications. 2014 (18): pp. 1-10.
    Source Title
    Fixed Point Theory and Applications
    DOI
    10.1186/1687-1812-2014-18
    ISSN
    1687-1820
    Remarks

    This article is published under the Open Access publishing model and distributed under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/2.0/ Please refer to the licence to obtain terms for any further reuse or distribution of this work.

    URI
    http://hdl.handle.net/20.500.11937/26654
    Collection
    • Curtin Research Publications
    Abstract

    In this paper, we extend and prove Ky Fan’s Theorem for discontinuous increasing maps f in a Banach lattice X when f has no compact conditions. The main tools of analysis are the variational characterization of the generalized projection operator and order-theoretic fixed-point theory. Moreover, we establish a sequence {xn} which converges strongly to the unique best approximation point. As an application of our best approximation theorems, a fixed-point theorem for non-self maps is established and proved under some conditions. Our results generalize and improve many recent results obtained by many authors.

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