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Amenability and Ramsey theory in the metric setting
被引:1
|作者:
Kaichouh, Adriane
[1
]
机构:
[1] Univ Lyon 1, Inst Camille Jordan, F-69622 Villeurbanne, France
关键词:
amenability;
Ramsey theory;
continuous logic;
model theory for metric structures;
Kechris-Pestov-Todorcevic correspondence;
automorphism groups;
D O I:
10.4064/fm231-1-2
中图分类号:
O1 [数学];
学科分类号:
0701 ;
070101 ;
摘要:
Moore [Fund. Math. 220 (2013)] characterizes the amenability of the automorphism groups of countable ultrahomogeneous structures by a Ramsey-type property. We extend this result to the automorphism groups of metric Fraisse structures, which encompass all Polish groups. As an application, we prove that amenability is a G(delta) condition.
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页码:19 / 38
页数:20
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