论文标题
扭转 - 免费的阿贝尔团体重新审视（2）
Torsion--free abelian groups revisited (2)
论文作者
论文摘要
令G为无扭转的Abelian级别。自动（g）对G的最大独立子集的作用轨道确定G。G。G。G。G。G。G。G。G。G。包含纯强大不可分解的基团作为有限指数的亚组的直接总和。
Let G be a torsion-free abelian group of finite rank. The orbits of the action of Aut(G) on the set of maximal independent subsets of G determine the indecomposable decompositions of G. G contains a direct sum of pure strongly indecomposable groups as a subgroup of finite index.
