FI-extending hulls of Abelian groups

All groups considered are Abelian. As is well known, in a divisible group every subgroup is essential in a direct summand. Moreover, the fully invariant subgroups play a crucial role in the structure of an Abelian group. Thus it is natural to consider the class of groups in which every fully invaria...

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Veröffentlicht in:	Beiträge zur Algebra und Geometrie 2019-12, Vol.60 (4), p.671-678
Hauptverfasser:	Birkenmeier, Gary F., LeBlanc, Richard L.
Format:	Artikel
Sprache:	eng
Schlagworte:	Algebra Algebraic Geometry Convex and Discrete Geometry Geometry Group theory Hulls Invariants Mathematics Mathematics and Statistics Original Paper Subgroups
Online-Zugang:	Volltext
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