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A DICHOTOMY THEOREM FOR THE ELLENTUCK TOPOLOGY

机译:ELLENTUCK拓扑的二分法定理

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摘要

Results are deduced from the following dichotomy which reduces descriptive properties concerning the Ellentuck topology to two well-known examples. Theorem: Every nonempty perfect set in the Ellentuck topology contains a closed copy of the Sorgenfrey line or a closed copy of the rational numbers. This leads to a Marczewski-Burstin representation for Marczewski sets in the Ellentuck topology.
机译:从以下二分法得出结果,该二分法将与Ellentuck拓扑有关的描述性降低为两个众所周知的示例。定理:Ellentuck拓扑中的每个非空完美集都包含Sorgenfrey线的封闭副本或有理数的封闭副本。这导致Ellentuck拓扑中Marczewski集的Marczewski-Burstin表示。

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