Fixed point theorems for nonexpansive mappingson nonconvex sets in UCED Banach spaces
It is shown that every asymptotically regular or λ ‐firmly nonexpansive mapping T : C → C has a fixed point whenever C is a finite union of nonempty weakly compact convex subsets of a Banach space X which is uniformly convex in every direction. Furthermore, if is any compatible family of strongly no...
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Veröffentlicht in: | International journal of mathematics and mathematical sciences 2002-01, Vol.31 (4), p.251-257 |
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Hauptverfasser: | , , |
Format: | Artikel |
Sprache: | eng |
Online-Zugang: | Volltext |
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Zusammenfassung: | It is shown that every asymptotically regular or λ ‐firmly nonexpansive mapping T : C → C has a fixed point whenever C is a finite union of nonempty weakly compact convex subsets of a Banach space X which is uniformly convex in every direction. Furthermore, if is any compatible family of strongly nonexpansive self‐mappings on such a C and the graphs of T i , i ∈ I , have a nonempty intersection, then T i , i ∈ I , have a common fixed point in C . |
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ISSN: | 0161-1712 1687-0425 |
DOI: | 10.1155/S0161171202107113 |