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We define a combinatorial property of a projective Fraisse category which we call the \emph{approximate Ramsey property}. Let be a continuum, a closed subgroup of the homeomorphism group of , and the limit of projective Fraisse category such that is dense in . We prove that has the approximate Ramsey property if and only if is extremely amenable. We prove that the group of homeomorphisms of the universal pseudo-solenoid has non-metrizable universal minimal flow.

生成讲解博客的中文版本

生成AI智能校验的中文版本