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Countable ℵ0-indecomposable mixed abelian groups of finite torsion-free rank

✍ Scribed by Saharon Shelah; Alexander Soifer


Publisher
Elsevier Science
Year
1986
Tongue
English
Weight
400 KB
Volume
100
Category
Article
ISSN
0021-8693

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Maximum Order of Finite Abelian Subgroup
✍ Zhiqiang Bao 📂 Article 📅 2001 🏛 Elsevier Science 🌐 English ⚖ 128 KB

Let F be a free group of rank n. Denote by Out F its outer automorphism n n group, that is, its automorphism group modulo its inner automorphism group. For arbitrary n, by considering group actions on finite connected graphs, we derived the maximum order of finite abelian subgroups in Out F . Moreov