In 1960, Fuchs posed the problem of characterizing the groups which are the groups of units of commutative rings. In the following years, some partial answers have been given to this question in particular cases.

中文翻译：

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有限生成的阿贝尔单位组

1960年，Fuchs提出了表征交换环单元组的问题。在接下来的几年中，在某些情况下，已经对该问题提供了部分答案。