A common fixed point theorem for a commuting family of nonexpansive mappings one of which is multivalued

被引:1
|
作者
Nanan, Narawadee [1 ]
Dhompongsa, Sompong [1 ,2 ]
机构
[1] Chiang Mai Univ, Fac Sci, Dept Math, Chiang Mai 50200, Thailand
[2] Chiang Mai Univ, Fac Sci, Math Sci Res Ctr, Chiang Mai 50200, Thailand
关键词
Common fixed point; Nonexpansive retract; Property (D); Kirk-Massa condition;
D O I
10.1186/1687-1812-2011-54
中图分类号
O29 [应用数学];
学科分类号
070104 ;
摘要
Bruck [Pac. J. Math. 53, 59-71 1974 Theorem 1] proved that for a nonempty closed convex subset E of a Banach space X, if E is weakly compact or bounded and separable and suppose that E has both (FPP) and (CFPP), then for any commuting family S of nonexpansive self-mappings of E, the set F(S) of common fixed points of S is a nonempty nonexpansive retract of E. In this paper, we extend the above result when one of its elements in S is multivalued. The result extends previously known results (on common fixed points of a pair of single valued and multivalued commuting mappings) to infinite number of mappings and to a wider class of spaces.
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页数:10
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