Semifree actions of free groups

被引：0

作者：

Hils, Martin ^{[1
]}

机构：

[1] Humboldt Univ, Inst Math, D-10099 Berlin, Germany

[2] Univ Lyon 1, Inst Camille Jordan Lyon 1, F-69622 Villeurbanne, France

来源：

ARCHIVE FOR MATHEMATICAL LOGIC | 2007年 / 46卷 / 02期

关键词：

Primary 03C45; Secondary 20F05;

D O I：

10.1007/s00153-006-0029-8

中图分类号：

O1 [数学];

学科分类号：

0701 ; 070101 ;

摘要：

We study countable universes similar to a free action of a group G. It turns out that this is equivalent to the study of free semi-actions of G, with two universes being transformable iff one corresponding free semi-action can be obtained from the other by a finite alteration. In the case of a free group G (in finitely many or countably many generators), a classification is given.

引用

页码：93 / 105

页数：13

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