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arXiv · 1003.3258

Local operations and eventually open actions

Barbara Majcher-Iwanow
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Abstract

We study continuous actions of Polish groups on Polish spaces. We develop Scott analysis introduced by Hjorth for studying orbit equivalence relations. We define eventually open actions and prove that this property characterizes the actions endowed with a complete system of hereditarily countable invariant structures.

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Barbara Majcher-Iwanow. 2010-03-16. Local operations and eventually open actions. https://arxiv.org/abs/1003.3258

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