On the Schauder fixed point property II

被引:0
作者
Salame, Khadime [1 ]
机构
[1] Univ IBA Thiam Thies, Dept Math, UFR Sci & Technol, BP 967, Thies, Senegal
关键词
Almost (automorphic) periodic function; Amenability; Locally convex space; Schauder fixed point property; Strongly amenable semigroup; TOPOLOGICAL SEMIGROUPS;
D O I
10.1007/s43034-023-00300-1
中图分类号
O29 [应用数学];
学科分类号
070104 ;
摘要
The Schauder fixed point property (F) was introduced and studied by Lau and Zhang as a semigroup formulation in the general setting of convex spaces of the well-known Schauder fixed point theorem in Banach spaces. What amenability property should possess a semigroup or a topological group to satisfy the Schauder fixed point property. Recently, the author provided a partial answer to that question and as a sequel, it is the purpose of this paper to study in more deep this problem. Our main result establishes that for a compact semitopological semigroup S we have: LUC(S) is left amenable if, and only if, S has the fixed point property (F). Furthermore, we also prove that totally bounded topological groups, semitopological groups S with the property that LUC(S) subset of aa( S), and strongly left amenable semitopological semigroups, possess all the Schauder fixed point property.
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页数:12
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