Endpoints of multivalued nonexpansive mappings in geodesic spaces

© 2015, Panyanak. Let X be either a uniformly convex Banach space or a reflexive Banach space having the Opial property. It is shown that a multivalued nonexpansive mapping on a bounded closed convex subset of X has an endpoint if and only if it has the approximate endpoint property. This is the fir...

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Bibliographic Details
Main Author: Bancha Panyanak
Format: Journal
Published: 2018
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Online Access:https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84940640046&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/54629
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Institution: Chiang Mai University
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Summary:© 2015, Panyanak. Let X be either a uniformly convex Banach space or a reflexive Banach space having the Opial property. It is shown that a multivalued nonexpansive mapping on a bounded closed convex subset of X has an endpoint if and only if it has the approximate endpoint property. This is the first result regarding the existence of endpoints for such kind of mappings even in Hilbert spaces. The related result in a complete CAT(0) space is also given.