The complexity of the set of squares in the homeomorphism group of the circle

被引：3

作者：

Gartside, Paul ^{[1
]}

Pejic, Bojana ^{[1
]}

机构：

[1] Univ Pittsburgh, Dept Math, Pittsburgh, PA 15260 USA

来源：

FUNDAMENTA MATHEMATICAE | 2007年 / 195卷 / 02期

关键词：

Polish group; squares; Borel; complete analytic;

D O I：

10.4064/fm195-2-2

中图分类号：

O1 [数学];

学科分类号：

0701 ; 070101 ;

摘要：

The set of squares in the group of autohomeomorphisms of the circle is complete analytic, and hence analytic but not Borel.

引用

收藏

页码：125 / 134

页数：10

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